Finding the Fourth Proportional to 80,947.99, 111,778.73 and 50,785.17

Step by Step Solution

1. Step 1: Write the proportion equation
   80,947.99 : 111,778.73 = 50,785.17 : x
2. Step 2: Convert to fraction form
   80,947.99/111,778.73 = 50,785.17/x
3. Step 3: Cross multiply
   80,947.99x = 111,778.73 × 50,785.17
4. Step 4: Simplify right side
   80,947.99x = 5,676,701,805.43
5. Step 5: Solve for x
   x = 5,676,701,805.43/80,947.99
6. Step 6: Final answer
   x = 70,127.77