Finding the Fourth Proportional to 71,557.98, 98,741.61 and 39,719.04

Step by Step Solution

1. Step 1: Write the proportion equation
   71,557.98 : 98,741.61 = 39,719.04 : x
2. Step 2: Convert to fraction form
   71,557.98/98,741.61 = 39,719.04/x
3. Step 3: Cross multiply
   71,557.98x = 98,741.61 × 39,719.04
4. Step 4: Simplify right side
   71,557.98x = 3,921,921,957.25
5. Step 5: Solve for x
   x = 3,921,921,957.25/71,557.98
6. Step 6: Final answer
   x = 54,807.61