Finding the Fourth Proportional to 31,087.24, 42,899.04 and 17,658.45

Step by Step Solution

1. Step 1: Write the proportion equation
   31,087.24 : 42,899.04 = 17,658.45 : x
2. Step 2: Convert to fraction form
   31,087.24/42,899.04 = 17,658.45/x
3. Step 3: Cross multiply
   31,087.24x = 42,899.04 × 17,658.45
4. Step 4: Simplify right side
   31,087.24x = 757,530,552.89
5. Step 5: Solve for x
   x = 757,530,552.89/31,087.24
6. Step 6: Final answer
   x = 24,367.89