Finding the Fourth Proportional to 31,158.12, 42,996.38 and 17,008.12

Step by Step Solution

1. Step 1: Write the proportion equation
   31,158.12 : 42,996.38 = 17,008.12 : x
2. Step 2: Convert to fraction form
   31,158.12/42,996.38 = 17,008.12/x
3. Step 3: Cross multiply
   31,158.12x = 42,996.38 × 17,008.12
4. Step 4: Simplify right side
   31,158.12x = 731,287,590.61
5. Step 5: Solve for x
   x = 731,287,590.61/31,158.12
6. Step 6: Final answer
   x = 23,470.21