my Amorphallus konjac is in active growth I looked on the bottom of the pot and saw a white root coming out of the drainage hole. the shoot is now over 3 inches and still growing. my question is should i transplant the voodoo lily into a bigger pot?

Probably not, just feed and water it often enough!

Usually you want a pot that is 2-3x the diameter of the bulb, you want the planted as deep as the bulb is tall, a 3" tall bulb, should be planted 3" deep.
Their roots run straight to the side of the pot, then straight down!
Yours is just getting happy!
I break those escaping roots off, but if u like you nest your pot I ton a larger pot with some more soil in the bottom.

Okay, I will do that thanks.