Finding the Fourth Proportional to 72,280.92, 99,738.72 and 40,441.80

Step by Step Solution

1. Step 1: Write the proportion equation
   72,280.92 : 99,738.72 = 40,441.80 : x
2. Step 2: Convert to fraction form
   72,280.92/99,738.72 = 40,441.80/x
3. Step 3: Cross multiply
   72,280.92x = 99,738.72 × 40,441.80
4. Step 4: Simplify right side
   72,280.92x = 4,033,613,366.50
5. Step 5: Solve for x
   x = 4,033,613,366.50/72,280.92
6. Step 6: Final answer
   x = 55,804.68