Finding the Fourth Proportional to 134.82, 185.97 and 123.78

Step by Step Solution

1. Step 1: Write the proportion equation
   134.82 : 185.97 = 123.78 : x
2. Step 2: Convert to fraction form
   134.82/185.97 = 123.78/x
3. Step 3: Cross multiply
   134.82x = 185.97 × 123.78
4. Step 4: Simplify right side
   134.82x = 23,019.37
5. Step 5: Solve for x
   x = 23,019.37/134.82
6. Step 6: Final answer
   x = 170.74