Finding the Fourth Proportional to 131.37, 196.92 and 54.37

Step by Step Solution

1. Step 1: Write the proportion equation
   131.37 : 196.92 = 54.37 : x
2. Step 2: Convert to fraction form
   131.37/196.92 = 54.37/x
3. Step 3: Cross multiply
   131.37x = 196.92 × 54.37
4. Step 4: Simplify right side
   131.37x = 10,706.58
5. Step 5: Solve for x
   x = 10,706.58/131.37
6. Step 6: Final answer
   x = 81.50