Finding the Fourth Proportional to 60,940.52, 91,157.98 and 57,208.04

Step by Step Solution

1. Step 1: Write the proportion equation
   60,940.52 : 91,157.98 = 57,208.04 : x
2. Step 2: Convert to fraction form
   60,940.52/91,157.98 = 57,208.04/x
3. Step 3: Cross multiply
   60,940.52x = 91,157.98 × 57,208.04
4. Step 4: Simplify right side
   60,940.52x = 5,214,969,366.16
5. Step 5: Solve for x
   x = 5,214,969,366.16/60,940.52
6. Step 6: Final answer
   x = 85,574.74