Finding the Fourth Proportional to 60,309.48, 89,974.56 and 57,043.56

Step by Step Solution

1. Step 1: Write the proportion equation
   60,309.48 : 89,974.56 = 57,043.56 : x
2. Step 2: Convert to fraction form
   60,309.48/89,974.56 = 57,043.56/x
3. Step 3: Cross multiply
   60,309.48x = 89,974.56 × 57,043.56
4. Step 4: Simplify right side
   60,309.48x = 5,132,469,211.83
5. Step 5: Solve for x
   x = 5,132,469,211.83/60,309.48
6. Step 6: Final answer
   x = 85,102.20