Finding the Fourth Proportional to 131.50, 197.33 and 55.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131.50 : 197.33 = 55.50 : x
2. Step 2: Convert to fraction form
   131.50/197.33 = 55.50/x
3. Step 3: Cross multiply
   131.50x = 197.33 × 55.50
4. Step 4: Simplify right side
   131.50x = 10,951.82
5. Step 5: Solve for x
   x = 10,951.82/131.50
6. Step 6: Final answer
   x = 83.28