Finding the Fourth Proportional to 80,759.22, 111,076.83 and 64,808.70

Step by Step Solution

1. Step 1: Write the proportion equation
   80,759.22 : 111,076.83 = 64,808.70 : x
2. Step 2: Convert to fraction form
   80,759.22/111,076.83 = 64,808.70/x
3. Step 3: Cross multiply
   80,759.22x = 111,076.83 × 64,808.70
4. Step 4: Simplify right side
   80,759.22x = 7,198,744,952.42
5. Step 5: Solve for x
   x = 7,198,744,952.42/80,759.22
6. Step 6: Final answer
   x = 89,138.37