Finding the Fourth Proportional to 80,911.83, 111,612.60 and 50,644.61

Step by Step Solution

1. Step 1: Write the proportion equation
   80,911.83 : 111,612.60 = 50,644.61 : x
2. Step 2: Convert to fraction form
   80,911.83/111,612.60 = 50,644.61/x
3. Step 3: Cross multiply
   80,911.83x = 111,612.60 × 50,644.61
4. Step 4: Simplify right side
   80,911.83x = 5,652,576,040.02
5. Step 5: Solve for x
   x = 5,652,576,040.02/80,911.83
6. Step 6: Final answer
   x = 69,860.93