Finding the Fourth Proportional to 62.42, 86.06 and 42.71

Step by Step Solution

1. Step 1: Write the proportion equation
   62.42 : 86.06 = 42.71 : x
2. Step 2: Convert to fraction form
   62.42/86.06 = 42.71/x
3. Step 3: Cross multiply
   62.42x = 86.06 × 42.71
4. Step 4: Simplify right side
   62.42x = 3,675.41
5. Step 5: Solve for x
   x = 3,675.41/62.42
6. Step 6: Final answer
   x = 58.88