Finding the Fourth Proportional to 71,572.86, 98,773.56 and 39,744.72

Step by Step Solution

1. Step 1: Write the proportion equation
   71,572.86 : 98,773.56 = 39,744.72 : x
2. Step 2: Convert to fraction form
   71,572.86/98,773.56 = 39,744.72/x
3. Step 3: Cross multiply
   71,572.86x = 98,773.56 × 39,744.72
4. Step 4: Simplify right side
   71,572.86x = 3,925,727,485.60
5. Step 5: Solve for x
   x = 3,925,727,485.60/71,572.86
6. Step 6: Final answer
   x = 54,849.39