Finding the Fourth Proportional to 131.29, 196.59 and 92.56

Step by Step Solution

1. Step 1: Write the proportion equation
   131.29 : 196.59 = 92.56 : x
2. Step 2: Convert to fraction form
   131.29/196.59 = 92.56/x
3. Step 3: Cross multiply
   131.29x = 196.59 × 92.56
4. Step 4: Simplify right side
   131.29x = 18,196.86
5. Step 5: Solve for x
   x = 18,196.86/131.29
6. Step 6: Final answer
   x = 138.60