You need a ERP that caters for multi currency and then a Reporting Tool like Sage Intelligence that is able to cater for the multi currency set up in the ERP.

Sage Intelligence Reporting empowers you to quickly and easily obtain the information you need for improved reporting across your entire business. Based on the familiar Microsoft Excel application, Sage Intelligence Reporting lets you effortlessly create reports and analyze data, improving your visibility into your organization and helping you make informed business decisions.

As long as your Sage 300 is configured to allow multicurrency transactions, the standard financial report writer will do financials in a flash.  Unless you have very strict control on what is entered, all financial statements are generated in the home currency.  Individual accounts (like Bank) can display and reconcile foreign currency, but unless ALL your transactions in a department are in the same foreign currency, your only financial report will be in your home currency.