Finding the Fourth Proportional to 126.82, 174.72 and 118.72

Step by Step Solution

1. Step 1: Write the proportion equation
   126.82 : 174.72 = 118.72 : x
2. Step 2: Convert to fraction form
   126.82/174.72 = 118.72/x
3. Step 3: Cross multiply
   126.82x = 174.72 × 118.72
4. Step 4: Simplify right side
   126.82x = 20,742.76
5. Step 5: Solve for x
   x = 20,742.76/126.82
6. Step 6: Final answer
   x = 163.56