Finding the Fourth Proportional to 131.59, 196.49 and 117.79

Step by Step Solution

1. Step 1: Write the proportion equation
   131.59 : 196.49 = 117.79 : x
2. Step 2: Convert to fraction form
   131.59/196.49 = 117.79/x
3. Step 3: Cross multiply
   131.59x = 196.49 × 117.79
4. Step 4: Simplify right side
   131.59x = 23,144.26
5. Step 5: Solve for x
   x = 23,144.26/131.59
6. Step 6: Final answer
   x = 175.88