Finding the Fourth Proportional to 80,498.63, 111,109.79 and 50,265.79

Step by Step Solution

1. Step 1: Write the proportion equation
   80,498.63 : 111,109.79 = 50,265.79 : x
2. Step 2: Convert to fraction form
   80,498.63/111,109.79 = 50,265.79/x
3. Step 3: Cross multiply
   80,498.63x = 111,109.79 × 50,265.79
4. Step 4: Simplify right side
   80,498.63x = 5,585,021,218.97
5. Step 5: Solve for x
   x = 5,585,021,218.97/80,498.63
6. Step 6: Final answer
   x = 69,380.32