Finding the Fourth Proportional to 72,351.69, 99,845.25 and 40,520.82

Step by Step Solution

1. Step 1: Write the proportion equation
   72,351.69 : 99,845.25 = 40,520.82 : x
2. Step 2: Convert to fraction form
   72,351.69/99,845.25 = 40,520.82/x
3. Step 3: Cross multiply
   72,351.69x = 99,845.25 × 40,520.82
4. Step 4: Simplify right side
   72,351.69x = 4,045,811,403.11
5. Step 5: Solve for x
   x = 4,045,811,403.11/72,351.69
6. Step 6: Final answer
   x = 55,918.69