Finding the Fourth Proportional to 31,008.60, 42,793.11 and 17,581.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,008.60 : 42,793.11 = 17,581.50 : x
2. Step 2: Convert to fraction form
   31,008.60/42,793.11 = 17,581.50/x
3. Step 3: Cross multiply
   31,008.60x = 42,793.11 × 17,581.50
4. Step 4: Simplify right side
   31,008.60x = 752,367,063.47
5. Step 5: Solve for x
   x = 752,367,063.47/31,008.60
6. Step 6: Final answer
   x = 24,263.17