Finding the Fourth Proportional to 60,307.54, 83,605.58 and 57,108.15

Step by Step Solution

1. Step 1: Write the proportion equation
   60,307.54 : 83,605.58 = 57,108.15 : x
2. Step 2: Convert to fraction form
   60,307.54/83,605.58 = 57,108.15/x
3. Step 3: Cross multiply
   60,307.54x = 83,605.58 × 57,108.15
4. Step 4: Simplify right side
   60,307.54x = 4,774,560,003.48
5. Step 5: Solve for x
   x = 4,774,560,003.48/60,307.54
6. Step 6: Final answer
   x = 79,170.20