Finding the Fourth Proportional to 81,016.32, 111,810.24 and 49,177.92

Step by Step Solution

1. Step 1: Write the proportion equation
   81,016.32 : 111,810.24 = 49,177.92 : x
2. Step 2: Convert to fraction form
   81,016.32/111,810.24 = 49,177.92/x
3. Step 3: Cross multiply
   81,016.32x = 111,810.24 × 49,177.92
4. Step 4: Simplify right side
   81,016.32x = 5,498,595,037.90
5. Step 5: Solve for x
   x = 5,498,595,037.90/81,016.32
6. Step 6: Final answer
   x = 67,870.21