Finding the Fourth Proportional to 72,007.98, 99,368.94 and 40,176.19

Step by Step Solution

1. Step 1: Write the proportion equation
   72,007.98 : 99,368.94 = 40,176.19 : x
2. Step 2: Convert to fraction form
   72,007.98/99,368.94 = 40,176.19/x
3. Step 3: Cross multiply
   72,007.98x = 99,368.94 × 40,176.19
4. Step 4: Simplify right side
   72,007.98x = 3,992,265,413.54
5. Step 5: Solve for x
   x = 3,992,265,413.54/72,007.98
6. Step 6: Final answer
   x = 55,441.99