Finding the Fourth Proportional to 67.98, 101.48 and 54.32

Step by Step Solution

1. Step 1: Write the proportion equation
   67.98 : 101.48 = 54.32 : x
2. Step 2: Convert to fraction form
   67.98/101.48 = 54.32/x
3. Step 3: Cross multiply
   67.98x = 101.48 × 54.32
4. Step 4: Simplify right side
   67.98x = 5,511.61
5. Step 5: Solve for x
   x = 5,511.61/67.98
6. Step 6: Final answer
   x = 81.08