Finding the Fourth Proportional to 103.42, 142.72 and 62.00

Step by Step Solution

1. Step 1: Write the proportion equation
   103.42 : 142.72 = 62.00 : x
2. Step 2: Convert to fraction form
   103.42/142.72 = 62.00/x
3. Step 3: Cross multiply
   103.42x = 142.72 × 62.00
4. Step 4: Simplify right side
   103.42x = 8,848.69
5. Step 5: Solve for x
   x = 8,848.69/103.42
6. Step 6: Final answer
   x = 85.56