calculated measure by multiplying 2 columns

Summary:multipying revenue amount with ledger amount is giving incorrect results.

Content (please ensure you mask any confidential information): project billing revenue work area

External Revenue Amount in Bill Transaction Currency	Ledger Currency Conversion Rate	Revenue Amount in Ledger Currency
External Revenue Amount in Bill Transaction Currency	13029087.65	Ledger Currency Conversion Rate	0.89855	Revenue Amount in Ledger Currency	11707286.71
External Revenue Amount in Bill Transaction Currency	-128714461.1	Ledger Currency Conversion Rate	0.90342	Revenue Amount in Ledger Currency	-116283218.5
External Revenue Amount in Bill Transaction Currency	28960060	Ledger Currency Conversion Rate	0.92111	Revenue Amount in Ledger Currency	26675400.87
External Revenue Amount in Bill Transaction Currency	129016060	Ledger Currency Conversion Rate	0.92413	Revenue Amount in Ledger Currency	119227611.5
External Revenue Amount in Bill Transaction Currency	83883929.08	Ledger Currency Conversion Rate	0.94679	Revenue Amount in Ledger Currency	79420465.21
External Revenue Amount in Bill Transaction Currency	126174675.6	Ledger Currency Conversion Rate		Revenue Amount in Ledger Currency	120747545.9

If i include conversion rate it works well but see below if i exclude conversion rate in analysis then I am getting a different result :

113988725.4 which is different from 120747545.9

I am using the calculated measure by simply multiplying

External Revenue Amount in Bill Transaction Currency *

Ledger Currency Conversion Rate

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