My client makes lots of foreign currency payments in a day. However before making the payment he checks with the bank and negotiate the exchange rate. So in each payment (during the day) the exchange rate would vary. For example in morning payment is made in USD (@ 59.60), in afternoon he would make the payment with 59.65 & later he would make payment with 59.58.
Since the payment is huge we can't use the average rate.
They are using APP.
Please suggest how can we map such scenarion?