Finding the Fourth Proportional to 131.74, 196.56 and 112.26

Step by Step Solution

1. Step 1: Write the proportion equation
   131.74 : 196.56 = 112.26 : x
2. Step 2: Convert to fraction form
   131.74/196.56 = 112.26/x
3. Step 3: Cross multiply
   131.74x = 196.56 × 112.26
4. Step 4: Simplify right side
   131.74x = 22,065.77
5. Step 5: Solve for x
   x = 22,065.77/131.74
6. Step 6: Final answer
   x = 167.50