Project Budget VS Daily Currency Exchange Rate

Summary: We have valid scenario of currency conversion calculation. Need to understand how the currency variance shows impact on Project Budget.

Scenario - One PO is created in USD for a project that is in SAR currency, PO checks for the available budget on project and the budgetary control is passed. This specific PO will be received after one year as it is a big machine, in this span of one year the currency varies a lot and we need to understand how the Project budget is impacted with this ongoing currency exchange rate. Because at the time of receiving the total Project Budget is consumed for one PO as the Exchange Rate has increased a lot in the span of