Finding the Fourth Proportional to 67.91, 101.62 and 42.14

Step by Step Solution

1. Step 1: Write the proportion equation
   67.91 : 101.62 = 42.14 : x
2. Step 2: Convert to fraction form
   67.91/101.62 = 42.14/x
3. Step 3: Cross multiply
   67.91x = 101.62 × 42.14
4. Step 4: Simplify right side
   67.91x = 4,282.27
5. Step 5: Solve for x
   x = 4,282.27/67.91
6. Step 6: Final answer
   x = 63.06