Finding the Fourth Proportional to 31,087.50, 42,899.22 and 17,656.99

Step by Step Solution

1. Step 1: Write the proportion equation
   31,087.50 : 42,899.22 = 17,656.99 : x
2. Step 2: Convert to fraction form
   31,087.50/42,899.22 = 17,656.99/x
3. Step 3: Cross multiply
   31,087.50x = 42,899.22 × 17,656.99
4. Step 4: Simplify right side
   31,087.50x = 757,471,098.55
5. Step 5: Solve for x
   x = 757,471,098.55/31,087.50
6. Step 6: Final answer
   x = 24,365.78