Finding the Fourth Proportional to 72,382.09, 99,891.39 and 40,561.24

Step by Step Solution

1. Step 1: Write the proportion equation
   72,382.09 : 99,891.39 = 40,561.24 : x
2. Step 2: Convert to fraction form
   72,382.09/99,891.39 = 40,561.24/x
3. Step 3: Cross multiply
   72,382.09x = 99,891.39 × 40,561.24
4. Step 4: Simplify right side
   72,382.09x = 4,051,718,643.72
5. Step 5: Solve for x
   x = 4,051,718,643.72/72,382.09
6. Step 6: Final answer
   x = 55,976.81