Finding the Fourth Proportional to 72,116.27, 99,522.03 and 40,285.23

Step by Step Solution

1. Step 1: Write the proportion equation
   72,116.27 : 99,522.03 = 40,285.23 : x
2. Step 2: Convert to fraction form
   72,116.27/99,522.03 = 40,285.23/x
3. Step 3: Cross multiply
   72,116.27x = 99,522.03 × 40,285.23
4. Step 4: Simplify right side
   72,116.27x = 4,009,267,868.62
5. Step 5: Solve for x
   x = 4,009,267,868.62/72,116.27
6. Step 6: Final answer
   x = 55,594.50