Finding the Fourth Proportional to 31,711.80, 43,763.71 and 17,564.61

Step by Step Solution

1. Step 1: Write the proportion equation
   31,711.80 : 43,763.71 = 17,564.61 : x
2. Step 2: Convert to fraction form
   31,711.80/43,763.71 = 17,564.61/x
3. Step 3: Cross multiply
   31,711.80x = 43,763.71 × 17,564.61
4. Step 4: Simplify right side
   31,711.80x = 768,692,498.30
5. Step 5: Solve for x
   x = 768,692,498.30/31,711.80
6. Step 6: Final answer
   x = 24,239.95