Finding the Fourth Proportional to 131.42, 196.06 and 130.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131.42 : 196.06 = 130.50 : x
2. Step 2: Convert to fraction form
   131.42/196.06 = 130.50/x
3. Step 3: Cross multiply
   131.42x = 196.06 × 130.50
4. Step 4: Simplify right side
   131.42x = 25,585.83
5. Step 5: Solve for x
   x = 25,585.83/131.42
6. Step 6: Final answer
   x = 194.69