Finding the Fourth Proportional to 80,616.20, 111,300.14 and 51,945.98

Step by Step Solution

1. Step 1: Write the proportion equation
   80,616.20 : 111,300.14 = 51,945.98 : x
2. Step 2: Convert to fraction form
   80,616.20/111,300.14 = 51,945.98/x
3. Step 3: Cross multiply
   80,616.20x = 111,300.14 × 51,945.98
4. Step 4: Simplify right side
   80,616.20x = 5,781,594,419.80
5. Step 5: Solve for x
   x = 5,781,594,419.80/80,616.20
6. Step 6: Final answer
   x = 71,717.53