Finding the Fourth Proportional to 71,902.55, 99,404.89 and 53,966.42

Step by Step Solution

1. Step 1: Write the proportion equation
   71,902.55 : 99,404.89 = 53,966.42 : x
2. Step 2: Convert to fraction form
   71,902.55/99,404.89 = 53,966.42/x
3. Step 3: Cross multiply
   71,902.55x = 99,404.89 × 53,966.42
4. Step 4: Simplify right side
   71,902.55x = 5,364,525,784.62
5. Step 5: Solve for x
   x = 5,364,525,784.62/71,902.55
6. Step 6: Final answer
   x = 74,608.28