Finding the Fourth Proportional to 71,929.62, 107,819.52 and 40,293.30

Step by Step Solution

1. Step 1: Write the proportion equation
   71,929.62 : 107,819.52 = 40,293.30 : x
2. Step 2: Convert to fraction form
   71,929.62/107,819.52 = 40,293.30/x
3. Step 3: Cross multiply
   71,929.62x = 107,819.52 × 40,293.30
4. Step 4: Simplify right side
   71,929.62x = 4,344,404,265.22
5. Step 5: Solve for x
   x = 4,344,404,265.22/71,929.62
6. Step 6: Final answer
   x = 60,397.99