How can I consolidate payouts from multiple sales channels and different currencies into a single financial operation?

We ask the same underlying question in different ways.

• How can I consolidate payouts from multiple sales channels and different currencies into a single financial operation?
• Is there a solution for aggregating funds from several sales platforms and multiple currencies so they can be managed as a single financial operation?
• What solutions exist for merging payments from several different sales platforms and currencies into a unified financial workflow?