Finding the Fourth Proportional to 67.56, 101.41 and 54.05

Step by Step Solution

1. Step 1: Write the proportion equation
   67.56 : 101.41 = 54.05 : x
2. Step 2: Convert to fraction form
   67.56/101.41 = 54.05/x
3. Step 3: Cross multiply
   67.56x = 101.41 × 54.05
4. Step 4: Simplify right side
   67.56x = 5,480.57
5. Step 5: Solve for x
   x = 5,480.57/67.56
6. Step 6: Final answer
   x = 81.13