Finding the Fourth Proportional to 118.72, 164.60 and 114.72

Step by Step Solution

1. Step 1: Write the proportion equation
   118.72 : 164.60 = 114.72 : x
2. Step 2: Convert to fraction form
   118.72/164.60 = 114.72/x
3. Step 3: Cross multiply
   118.72x = 164.60 × 114.72
4. Step 4: Simplify right side
   118.72x = 18,882.91
5. Step 5: Solve for x
   x = 18,882.91/118.72
6. Step 6: Final answer
   x = 159.05