Finding the Fourth Proportional to 71,436.56, 98,584.79 and 39,608.42

Step by Step Solution

1. Step 1: Write the proportion equation
   71,436.56 : 98,584.79 = 39,608.42 : x
2. Step 2: Convert to fraction form
   71,436.56/98,584.79 = 39,608.42/x
3. Step 3: Cross multiply
   71,436.56x = 98,584.79 × 39,608.42
4. Step 4: Simplify right side
   71,436.56x = 3,904,787,767.93
5. Step 5: Solve for x
   x = 3,904,787,767.93/71,436.56
6. Step 6: Final answer
   x = 54,660.92