Finding the Fourth Proportional to 31,129.55, 42,959.98 and 17,702.02

Step by Step Solution

1. Step 1: Write the proportion equation
   31,129.55 : 42,959.98 = 17,702.02 : x
2. Step 2: Convert to fraction form
   31,129.55/42,959.98 = 17,702.02/x
3. Step 3: Cross multiply
   31,129.55x = 42,959.98 × 17,702.02
4. Step 4: Simplify right side
   31,129.55x = 760,478,425.16
5. Step 5: Solve for x
   x = 760,478,425.16/31,129.55
6. Step 6: Final answer
   x = 24,429.47