Finding the Fourth Proportional to 31,636.71, 43,658.91 and 17,490.42

Step by Step Solution

1. Step 1: Write the proportion equation
   31,636.71 : 43,658.91 = 17,490.42 : x
2. Step 2: Convert to fraction form
   31,636.71/43,658.91 = 17,490.42/x
3. Step 3: Cross multiply
   31,636.71x = 43,658.91 × 17,490.42
4. Step 4: Simplify right side
   31,636.71x = 763,612,672.64
5. Step 5: Solve for x
   x = 763,612,672.64/31,636.71
6. Step 6: Final answer
   x = 24,136.92