Finding the Fourth Proportional to 80,654.72, 120,677.88 and 72,469.52

Step by Step Solution

1. Step 1: Write the proportion equation
   80,654.72 : 120,677.88 = 72,469.52 : x
2. Step 2: Convert to fraction form
   80,654.72/120,677.88 = 72,469.52/x
3. Step 3: Cross multiply
   80,654.72x = 120,677.88 × 72,469.52
4. Step 4: Simplify right side
   80,654.72x = 8,745,468,038.22
5. Step 5: Solve for x
   x = 8,745,468,038.22/80,654.72
6. Step 6: Final answer
   x = 108,430.95