Finding the Fourth Proportional to 131.41, 196.82 and 102.30

Step by Step Solution

1. Step 1: Write the proportion equation
   131.41 : 196.82 = 102.30 : x
2. Step 2: Convert to fraction form
   131.41/196.82 = 102.30/x
3. Step 3: Cross multiply
   131.41x = 196.82 × 102.30
4. Step 4: Simplify right side
   131.41x = 20,134.69
5. Step 5: Solve for x
   x = 20,134.69/131.41
6. Step 6: Final answer
   x = 153.22