Finding the Fourth Proportional to 72,007.24, 99,374.78 and 40,176.84

Step by Step Solution

1. Step 1: Write the proportion equation
   72,007.24 : 99,374.78 = 40,176.84 : x
2. Step 2: Convert to fraction form
   72,007.24/99,374.78 = 40,176.84/x
3. Step 3: Cross multiply
   72,007.24x = 99,374.78 × 40,176.84
4. Step 4: Simplify right side
   72,007.24x = 3,992,564,636.10
5. Step 5: Solve for x
   x = 3,992,564,636.10/72,007.24
6. Step 6: Final answer
   x = 55,446.71