Finding the Fourth Proportional to 131.82, 196.18 and 131.42

Step by Step Solution

1. Step 1: Write the proportion equation
   131.82 : 196.18 = 131.42 : x
2. Step 2: Convert to fraction form
   131.82/196.18 = 131.42/x
3. Step 3: Cross multiply
   131.82x = 196.18 × 131.42
4. Step 4: Simplify right side
   131.82x = 25,780.99
5. Step 5: Solve for x
   x = 25,780.99/131.82
6. Step 6: Final answer
   x = 195.58