Finding the Fourth Proportional to 71,475.42, 98,647.89 and 39,654.57

Step by Step Solution

1. Step 1: Write the proportion equation
   71,475.42 : 98,647.89 = 39,654.57 : x
2. Step 2: Convert to fraction form
   71,475.42/98,647.89 = 39,654.57/x
3. Step 3: Cross multiply
   71,475.42x = 98,647.89 × 39,654.57
4. Step 4: Simplify right side
   71,475.42x = 3,911,838,967.85
5. Step 5: Solve for x
   x = 3,911,838,967.85/71,475.42
6. Step 6: Final answer
   x = 54,729.85