Finding the Fourth Proportional to 31,110.50, 42,933.50 and 17,500.91

Step by Step Solution

1. Step 1: Write the proportion equation
   31,110.50 : 42,933.50 = 17,500.91 : x
2. Step 2: Convert to fraction form
   31,110.50/42,933.50 = 17,500.91/x
3. Step 3: Cross multiply
   31,110.50x = 42,933.50 × 17,500.91
4. Step 4: Simplify right side
   31,110.50x = 751,375,082.94
5. Step 5: Solve for x
   x = 751,375,082.94/31,110.50
6. Step 6: Final answer
   x = 24,151.81