Finding the Fourth Proportional to 83,477.92, 124,589.72 and 72,183.28

Step by Step Solution

1. Step 1: Write the proportion equation
   83,477.92 : 124,589.72 = 72,183.28 : x
2. Step 2: Convert to fraction form
   83,477.92/124,589.72 = 72,183.28/x
3. Step 3: Cross multiply
   83,477.92x = 124,589.72 × 72,183.28
4. Step 4: Simplify right side
   83,477.92x = 8,993,294,643.88
5. Step 5: Solve for x
   x = 8,993,294,643.88/83,477.92
6. Step 6: Final answer
   x = 107,732.62