How can i relate my tables in order to get unique results

Question

Data given below is collected from three table
ACCT_NO = 1242001063101
SYM_RUN_DATE     = 8/29/2012
ACTUAL_BALANCE = -7316.94
LEDGER_BALANCE_BASE =
CLIENT_NO     = 1240000040
PROFIT_CENTRE = 206
BRANCH_NO = 124
CURRENCY     = PKR
ACCT_TYPE = 101
DEPOSIT_TYPE     = S
ACCT_STATUS = D
OPEN_DATE = 2/19/2002
MATURITY_DATE =
ACCT_CLOSE_DATE =
CREDIT_ACCT_LEVEL_INT_RATE= 0
CR_INT_TYPE = PLS
ZAKAT_EXEMPT = N
AGG_BAL_MTD =-212191.26
AGG_BAL_QTD = -439016.4
AGG_BAL_YTD = -1739732.19
the data of Fourth table look like this:
Sym_run_date = 30-AUG-12
Int-type = 7d2
Effect_date = 02-NOV-09
Balance = 123321232.23
CCY = USD
Actual Rate = 5
Problem : the main problem is that i want to collect the data from above three tables and as well as the relating data of the fourth table but fourth table is giving me more than one records
for example : ACCT_NO: 1242001063101 has multiple records in the fourth table with same effect_date (means two records found of that account of same effect_date)

Answer 1

This way.
with data as
select 'PLS' prod,      9999 bal,           6 rate from dual union all
select 'PLS',      99999,           6 from dual union all
select 'FP4',      5000,           5 from dual union all
select 'FP4',      10000,           6 from dual union all
select 'FP4',      50000,           6.7 from dual union all
select 'FP5',      50000,           6.9 from dual
select  rn, prod, bal,
        case when
                rn = 1
              then
                0
              else
                lag(bal) over (partition by prod order by bal)
        end from_bal,
        bal to_bal,
        rate rate
  from  (
          select prod, bal, rate, row_number() over (partition by prod order by bal) rn
            from data
        ) a
order by prod;
RN  PROD      BAL      FROM_BAL TO_BAL   RATE                  
1     FP4     5000     0     5000     5
2     FP4     10000     5000     10000     6
3     FP4     50000     10000     50000     6.7
1     FP5     50000     0     50000     6.9
1     PLS     9999     0     9999     6
2     PLS     99999     9999     99999     6