Question 1153700
The "460 ft" shown on the picture is labeling the wrong part.  Otherwise, the way you described is not right.


Your picture is most likely needing to show two similar triangles, sharing an angle where Moody is standing.   Smaller one, ground leg 42, height 23.  Larger triangle,  ground leg 460, height unknown of the building.



If height of building is y, then:
{{{y/23=460/42}}}-------simplify, solve for y.