Tan(44) = X/140 (X is the height of the pole prior to adding the 4 foot stand)
X = Tan(44) (140)
X = about 135
Add the remaining 4 from the stand
About 139 feet. (<- Your Answer)
Which makes sense considering a 45-45 triangle has same side lengths, and 44 is very close to 45, therefore the pole length will be very similar to the distance the person walked.