The dollar bill that brought misfortune in the previous part, finally leads to happiness. I want to see it as all the hopes of that poor guy have now reached this other mendicant through the dollar bill, giving that moment of happiness that he couldn't have. Following this interpretation I feel in middle between sad and happy.
Sorry for my pseudo-philosophical arguments, I liked both your works, especially the first one, and I'll gladly await to see the third part. Keep on the good work!