Finding the Fourth Proportional to 71,976.24, 99,323.76 and 39,268.72

Step by Step Solution

1. Step 1: Write the proportion equation
   71,976.24 : 99,323.76 = 39,268.72 : x
2. Step 2: Convert to fraction form
   71,976.24/99,323.76 = 39,268.72/x
3. Step 3: Cross multiply
   71,976.24x = 99,323.76 × 39,268.72
4. Step 4: Simplify right side
   71,976.24x = 3,900,316,920.79
5. Step 5: Solve for x
   x = 3,900,316,920.79/71,976.24
6. Step 6: Final answer
   x = 54,188.95