Finding the Fourth Proportional to 196.56, 294.89 and 88.31

Step by Step Solution

1. Step 1: Write the proportion equation
   196.56 : 294.89 = 88.31 : x
2. Step 2: Convert to fraction form
   196.56/294.89 = 88.31/x
3. Step 3: Cross multiply
   196.56x = 294.89 × 88.31
4. Step 4: Simplify right side
   196.56x = 26,042.03
5. Step 5: Solve for x
   x = 26,042.03/196.56
6. Step 6: Final answer
   x = 132.49