If you would like to calculate the length of the new aisle, you can do this using the following steps:
the shape of the right triangle:
c = 119.62 meters
b = 110 meters
a = 47 meters
The length of the new aisle perpendicular to the hypotenuse coming from the right angle:
n ... the new aisle
n = a * b / c
n = 47 * 110 / 119.62
n = 43.22 meters
The correct result would be 43.22 meters.