Bassanio confessed the truth to Portia and he beg for her help.
... Please forgive me... Please help me
It's ok, but don't cry!
Portia, lent money to her husband with the condition of traveling together to Venice. - She thought of doing business, He didn't know what She had in mind -
It's just a loan... plus interests
I going to save my friend
The crowd, who appreciated Antonio, begged Shylock to wait for Bassanio. Bassanio was brining the money to pay the debt. He accepted, with a new condition, he would wait for Bassanio and not charge interest on the loan in exchange for Antonio publicly beg for forgiveness for all the times he had insulted and treated him badly.
... And meanwhile in Venice
Please, Bassanio, come soon
Bassanio arrived with the money, Antonio begged for forgiviness to Shylock. Shylock, fulfilled his part of the deal. ... and Portia, She proposed to them to do business!
All of them business partners, taking advantage of Antonio's experience in business. Shylock, was contributed with the money that he was paid. Bassanio and Antonio, was contributed with the interest money that they didn't have to pay. Portia, contributed new ideas, was the majority partner and also received the payment of the loan plus interes, She became rich!.