Finding the Fourth Proportional to 80,948, 111,778.72 and 50,785.16

Step by Step Solution

1. Step 1: Write the proportion equation
   80,948 : 111,778.72 = 50,785.16 : x
2. Step 2: Convert to fraction form
   80,948/111,778.72 = 50,785.16/x
3. Step 3: Cross multiply
   80,948x = 111,778.72 × 50,785.16
4. Step 4: Simplify right side
   80,948x = 5,676,700,179.80
5. Step 5: Solve for x
   x = 5,676,700,179.80/80,948
6. Step 6: Final answer
   x = 70,127.74