Finding the Fourth Proportional to 67.02, 100.69 and 54.27

Step by Step Solution

1. Step 1: Write the proportion equation
   67.02 : 100.69 = 54.27 : x
2. Step 2: Convert to fraction form
   67.02/100.69 = 54.27/x
3. Step 3: Cross multiply
   67.02x = 100.69 × 54.27
4. Step 4: Simplify right side
   67.02x = 5,463.93
5. Step 5: Solve for x
   x = 5,463.93/67.02
6. Step 6: Final answer
   x = 81.52