Finding the Fourth Proportional to 80,616.96, 111,301.02 and 51,986.16

Step by Step Solution

1. Step 1: Write the proportion equation
   80,616.96 : 111,301.02 = 51,986.16 : x
2. Step 2: Convert to fraction form
   80,616.96/111,301.02 = 51,986.16/x
3. Step 3: Cross multiply
   80,616.96x = 111,301.02 × 51,986.16
4. Step 4: Simplify right side
   80,616.96x = 5,786,112,633.88
5. Step 5: Solve for x
   x = 5,786,112,633.88/80,616.96
6. Step 6: Final answer
   x = 71,772.90