Which of the Fellowship would have gone ring mad?

[Voralphion]

Aragorn may have been ablr to resist it because he grew up fearing the power to become King never mind the power of the Ring.

He was never scared of 'the power' of becoming king, that was an invention of the movie.

Aragorn probably would have been able to resist the ring for quite a while, since it was offered freely to him on a few occasions and resisted it knowing of its power and dangers.