Finding the Fourth Proportional to 60,815.75, 83,964.33 and 39,315.85

Step by Step Solution

1. Step 1: Write the proportion equation
   60,815.75 : 83,964.33 = 39,315.85 : x
2. Step 2: Convert to fraction form
   60,815.75/83,964.33 = 39,315.85/x
3. Step 3: Cross multiply
   60,815.75x = 83,964.33 × 39,315.85
4. Step 4: Simplify right side
   60,815.75x = 3,301,128,793.72
5. Step 5: Solve for x
   x = 3,301,128,793.72/60,815.75
6. Step 6: Final answer
   x = 54,280.82