Finding the Fourth Proportional to 72,708.42, 109,120.96 and 37,658.10

Step by Step Solution

1. Step 1: Write the proportion equation
   72,708.42 : 109,120.96 = 37,658.10 : x
2. Step 2: Convert to fraction form
   72,708.42/109,120.96 = 37,658.10/x
3. Step 3: Cross multiply
   72,708.42x = 109,120.96 × 37,658.10
4. Step 4: Simplify right side
   72,708.42x = 4,109,288,023.78
5. Step 5: Solve for x
   x = 4,109,288,023.78/72,708.42
6. Step 6: Final answer
   x = 56,517.36