Finding the Fourth Proportional to 72,078.48, 99,468.72 and 40,250.16

Step by Step Solution

1. Step 1: Write the proportion equation
   72,078.48 : 99,468.72 = 40,250.16 : x
2. Step 2: Convert to fraction form
   72,078.48/99,468.72 = 40,250.16/x
3. Step 3: Cross multiply
   72,078.48x = 99,468.72 × 40,250.16
4. Step 4: Simplify right side
   72,078.48x = 4,003,631,895.00
5. Step 5: Solve for x
   x = 4,003,631,895.00/72,078.48
6. Step 6: Final answer
   x = 55,545.45