Finding the Fourth Proportional to 72,004.24, 99,370.63 and 40,173.83

Step by Step Solution

1. Step 1: Write the proportion equation
   72,004.24 : 99,370.63 = 40,173.83 : x
2. Step 2: Convert to fraction form
   72,004.24/99,370.63 = 40,173.83/x
3. Step 3: Cross multiply
   72,004.24x = 99,370.63 × 40,173.83
4. Step 4: Simplify right side
   72,004.24x = 3,992,098,796.61
5. Step 5: Solve for x
   x = 3,992,098,796.61/72,004.24
6. Step 6: Final answer
   x = 55,442.55