Finding the Fourth Proportional to 131.42, 196.96 and 50.18

Step by Step Solution

1. Step 1: Write the proportion equation
   131.42 : 196.96 = 50.18 : x
2. Step 2: Convert to fraction form
   131.42/196.96 = 50.18/x
3. Step 3: Cross multiply
   131.42x = 196.96 × 50.18
4. Step 4: Simplify right side
   131.42x = 9,883.45
5. Step 5: Solve for x
   x = 9,883.45/131.42
6. Step 6: Final answer
   x = 75.21