Finding the Fourth Proportional to 72,092.24, 99,480.18 and 40,260.45

Step by Step Solution

1. Step 1: Write the proportion equation
   72,092.24 : 99,480.18 = 40,260.45 : x
2. Step 2: Convert to fraction form
   72,092.24/99,480.18 = 40,260.45/x
3. Step 3: Cross multiply
   72,092.24x = 99,480.18 × 40,260.45
4. Step 4: Simplify right side
   72,092.24x = 4,005,116,812.88
5. Step 5: Solve for x
   x = 4,005,116,812.88/72,092.24
6. Step 6: Final answer
   x = 55,555.45