Finding the Fourth Proportional to 131.46, 196.17 and 117.79

Step by Step Solution

1. Step 1: Write the proportion equation
   131.46 : 196.17 = 117.79 : x
2. Step 2: Convert to fraction form
   131.46/196.17 = 117.79/x
3. Step 3: Cross multiply
   131.46x = 196.17 × 117.79
4. Step 4: Simplify right side
   131.46x = 23,106.86
5. Step 5: Solve for x
   x = 23,106.86/131.46
6. Step 6: Final answer
   x = 175.77