Finding the Fourth Proportional to 131.34, 196.83 and 88.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131.34 : 196.83 = 88.50 : x
2. Step 2: Convert to fraction form
   131.34/196.83 = 88.50/x
3. Step 3: Cross multiply
   131.34x = 196.83 × 88.50
4. Step 4: Simplify right side
   131.34x = 17,419.46
5. Step 5: Solve for x
   x = 17,419.46/131.34
6. Step 6: Final answer
   x = 132.63