Finding the Fourth Proportional to 31,086.49, 42,898.01 and 17,657.70

Step by Step Solution

1. Step 1: Write the proportion equation
   31,086.49 : 42,898.01 = 17,657.70 : x
2. Step 2: Convert to fraction form
   31,086.49/42,898.01 = 17,657.70/x
3. Step 3: Cross multiply
   31,086.49x = 42,898.01 × 17,657.70
4. Step 4: Simplify right side
   31,086.49x = 757,480,102.89
5. Step 5: Solve for x
   x = 757,480,102.89/31,086.49
6. Step 6: Final answer
   x = 24,366.86