Finding the Fourth Proportional to 59,400, 81,972 and 32,909.12

Step by Step Solution

1. Step 1: Write the proportion equation
   59,400 : 81,972 = 32,909.12 : x
2. Step 2: Convert to fraction form
   59,400/81,972 = 32,909.12/x
3. Step 3: Cross multiply
   59,400x = 81,972 × 32,909.12
4. Step 4: Simplify right side
   59,400x = 2,697,626,384.64
5. Step 5: Solve for x
   x = 2,697,626,384.64/59,400
6. Step 6: Final answer
   x = 45,414.59