Finding the Fourth Proportional to 31,151.12, 42,986.72 and 17,001.12

Step by Step Solution

1. Step 1: Write the proportion equation
   31,151.12 : 42,986.72 = 17,001.12 : x
2. Step 2: Convert to fraction form
   31,151.12/42,986.72 = 17,001.12/x
3. Step 3: Cross multiply
   31,151.12x = 42,986.72 × 17,001.12
4. Step 4: Simplify right side
   31,151.12x = 730,822,385.13
5. Step 5: Solve for x
   x = 730,822,385.13/31,151.12
6. Step 6: Final answer
   x = 23,460.55