Finding the Fourth Proportional to 67.62, 101.42 and 54.25

Step by Step Solution

1. Step 1: Write the proportion equation
   67.62 : 101.42 = 54.25 : x
2. Step 2: Convert to fraction form
   67.62/101.42 = 54.25/x
3. Step 3: Cross multiply
   67.62x = 101.42 × 54.25
4. Step 4: Simplify right side
   67.62x = 5,502.04
5. Step 5: Solve for x
   x = 5,502.04/67.62
6. Step 6: Final answer
   x = 81.37