Finding the Fourth Proportional to 134.31, 185.63 and 118.31

Step by Step Solution

1. Step 1: Write the proportion equation
   134.31 : 185.63 = 118.31 : x
2. Step 2: Convert to fraction form
   134.31/185.63 = 118.31/x
3. Step 3: Cross multiply
   134.31x = 185.63 × 118.31
4. Step 4: Simplify right side
   134.31x = 21,961.89
5. Step 5: Solve for x
   x = 21,961.89/134.31
6. Step 6: Final answer
   x = 163.52