Finding the Fourth Proportional to 131.33, 196.98 and 54.24

Step by Step Solution

1. Step 1: Write the proportion equation
   131.33 : 196.98 = 54.24 : x
2. Step 2: Convert to fraction form
   131.33/196.98 = 54.24/x
3. Step 3: Cross multiply
   131.33x = 196.98 × 54.24
4. Step 4: Simplify right side
   131.33x = 10,684.69
5. Step 5: Solve for x
   x = 10,684.69/131.33
6. Step 6: Final answer
   x = 81.36