Finding the Fourth Proportional to 80,856.48, 111,591.81 and 49,025.28

Step by Step Solution

1. Step 1: Write the proportion equation
   80,856.48 : 111,591.81 = 49,025.28 : x
2. Step 2: Convert to fraction form
   80,856.48/111,591.81 = 49,025.28/x
3. Step 3: Cross multiply
   80,856.48x = 111,591.81 × 49,025.28
4. Step 4: Simplify right side
   80,856.48x = 5,470,819,730.96
5. Step 5: Solve for x
   x = 5,470,819,730.96/80,856.48
6. Step 6: Final answer
   x = 67,660.87