Finding the Fourth Proportional to 80,520.83, 111,129.00 and 48,689.96

Step by Step Solution

1. Step 1: Write the proportion equation
   80,520.83 : 111,129.00 = 48,689.96 : x
2. Step 2: Convert to fraction form
   80,520.83/111,129.00 = 48,689.96/x
3. Step 3: Cross multiply
   80,520.83x = 111,129.00 × 48,689.96
4. Step 4: Simplify right side
   80,520.83x = 5,410,865,765.75
5. Step 5: Solve for x
   x = 5,410,865,765.75/80,520.83
6. Step 6: Final answer
   x = 67,198.34