Finding the Fourth Proportional to 131.34, 196.69 and 103.82

Step by Step Solution

1. Step 1: Write the proportion equation
   131.34 : 196.69 = 103.82 : x
2. Step 2: Convert to fraction form
   131.34/196.69 = 103.82/x
3. Step 3: Cross multiply
   131.34x = 196.69 × 103.82
4. Step 4: Simplify right side
   131.34x = 20,420.36
5. Step 5: Solve for x
   x = 20,420.36/131.34
6. Step 6: Final answer
   x = 155.48