Finding the Fourth Proportional to 62.10, 86.18 and 60.42

Step by Step Solution

1. Step 1: Write the proportion equation
   62.10 : 86.18 = 60.42 : x
2. Step 2: Convert to fraction form
   62.10/86.18 = 60.42/x
3. Step 3: Cross multiply
   62.10x = 86.18 × 60.42
4. Step 4: Simplify right side
   62.10x = 5,206.69
5. Step 5: Solve for x
   x = 5,206.69/62.10
6. Step 6: Final answer
   x = 83.84