Finding the Fourth Proportional to 62.42, 93.63 and 42.15

Step by Step Solution

1. Step 1: Write the proportion equation
   62.42 : 93.63 = 42.15 : x
2. Step 2: Convert to fraction form
   62.42/93.63 = 42.15/x
3. Step 3: Cross multiply
   62.42x = 93.63 × 42.15
4. Step 4: Simplify right side
   62.42x = 3,946.50
5. Step 5: Solve for x
   x = 3,946.50/62.42
6. Step 6: Final answer
   x = 63.23