Finding the Fourth Proportional to 80,930.80, 111,665.28 and 49,098.88

Step by Step Solution

1. Step 1: Write the proportion equation
   80,930.80 : 111,665.28 = 49,098.88 : x
2. Step 2: Convert to fraction form
   80,930.80/111,665.28 = 49,098.88/x
3. Step 3: Cross multiply
   80,930.80x = 111,665.28 × 49,098.88
4. Step 4: Simplify right side
   80,930.80x = 5,482,640,182.89
5. Step 5: Solve for x
   x = 5,482,640,182.89/80,930.80
6. Step 6: Final answer
   x = 67,744.79