Finding the Fourth Proportional to 72,002.64, 99,358.92 and 45,144

Step by Step Solution

1. Step 1: Write the proportion equation
   72,002.64 : 99,358.92 = 45,144 : x
2. Step 2: Convert to fraction form
   72,002.64/99,358.92 = 45,144/x
3. Step 3: Cross multiply
   72,002.64x = 99,358.92 × 45,144
4. Step 4: Simplify right side
   72,002.64x = 4,485,459,084.48
5. Step 5: Solve for x
   x = 4,485,459,084.48/72,002.64
6. Step 6: Final answer
   x = 62,295.76