Finding the Fourth Proportional to 31,131.73, 42,962.77 and 17,702.13

Step by Step Solution

1. Step 1: Write the proportion equation
   31,131.73 : 42,962.77 = 17,702.13 : x
2. Step 2: Convert to fraction form
   31,131.73/42,962.77 = 17,702.13/x
3. Step 3: Cross multiply
   31,131.73x = 42,962.77 × 17,702.13
4. Step 4: Simplify right side
   31,131.73x = 760,532,539.70
5. Step 5: Solve for x
   x = 760,532,539.70/31,131.73
6. Step 6: Final answer
   x = 24,429.50