The sum of three numbers is 108. The second number is four times greater than the first number, and the third number is 18 more than the first. Find the largest of the three numbers.

In the diagram, points d and e are marked by drawing arcs of equal size centered at b such that the arcs intersect ba and bc. then, intersecting arcs of equal size are drawn centered at points d and e. point p is located at the intersection of these arcs. based on this construction, m , and m