Finding the Fourth Proportional to 131.98, 196.56 and 130.42

Step by Step Solution

1. Step 1: Write the proportion equation
   131.98 : 196.56 = 130.42 : x
2. Step 2: Convert to fraction form
   131.98/196.56 = 130.42/x
3. Step 3: Cross multiply
   131.98x = 196.56 × 130.42
4. Step 4: Simplify right side
   131.98x = 25,635.36
5. Step 5: Solve for x
   x = 25,635.36/131.98
6. Step 6: Final answer
   x = 194.24