route traffic from few providers (windows)

Hello!
Im new in nginx and have a question about proxy configuration.
I have few (4) internet providers. Can i configure nginx to slove a problem: each provider configured to each port at local host when any program using needed port to internet connetion.
Example:
provider_1 - port at local host 7770
provider_2 - port at local host 7771
etc.

my providers: two 3G modems, LAN, Wi-Fi.

target: i need to route some programs to needed providers. For example: torrents will works with Wi-Fi (slow unlim) etc

regards!!!