Finding the Fourth Proportional to 80,498.12, 111,127.38 and 50,300.18

Step by Step Solution

1. Step 1: Write the proportion equation
   80,498.12 : 111,127.38 = 50,300.18 : x
2. Step 2: Convert to fraction form
   80,498.12/111,127.38 = 50,300.18/x
3. Step 3: Cross multiply
   80,498.12x = 111,127.38 × 50,300.18
4. Step 4: Simplify right side
   80,498.12x = 5,589,727,216.93
5. Step 5: Solve for x
   x = 5,589,727,216.93/80,498.12
6. Step 6: Final answer
   x = 69,439.23