Finding the Fourth Proportional to 72,270.48, 99,723.72 and 40,435.92

Step by Step Solution

1. Step 1: Write the proportion equation
   72,270.48 : 99,723.72 = 40,435.92 : x
2. Step 2: Convert to fraction form
   72,270.48/99,723.72 = 40,435.92/x
3. Step 3: Cross multiply
   72,270.48x = 99,723.72 × 40,435.92
4. Step 4: Simplify right side
   72,270.48x = 4,032,420,364.02
5. Step 5: Solve for x
   x = 4,032,420,364.02/72,270.48
6. Step 6: Final answer
   x = 55,796.23