Finding the Fourth Proportional to 72,435.57, 99,960.77 and 40,604.48

Step by Step Solution

1. Step 1: Write the proportion equation
   72,435.57 : 99,960.77 = 40,604.48 : x
2. Step 2: Convert to fraction form
   72,435.57/99,960.77 = 40,604.48/x
3. Step 3: Cross multiply
   72,435.57x = 99,960.77 × 40,604.48
4. Step 4: Simplify right side
   72,435.57x = 4,058,854,383.42
5. Step 5: Solve for x
   x = 4,058,854,383.42/72,435.57
6. Step 6: Final answer
   x = 56,034.00