Finding the Fourth Proportional to 31,131.60, 42,961.68 and 17,702.52

Step by Step Solution

1. Step 1: Write the proportion equation
   31,131.60 : 42,961.68 = 17,702.52 : x
2. Step 2: Convert to fraction form
   31,131.60/42,961.68 = 17,702.52/x
3. Step 3: Cross multiply
   31,131.60x = 42,961.68 × 17,702.52
4. Step 4: Simplify right side
   31,131.60x = 760,529,999.43
5. Step 5: Solve for x
   x = 760,529,999.43/31,131.60
6. Step 6: Final answer
   x = 24,429.52