Finding the Fourth Proportional to 123.58, 168.25 and 123.19

Step by Step Solution

1. Step 1: Write the proportion equation
   123.58 : 168.25 = 123.19 : x
2. Step 2: Convert to fraction form
   123.58/168.25 = 123.19/x
3. Step 3: Cross multiply
   123.58x = 168.25 × 123.19
4. Step 4: Simplify right side
   123.58x = 20,727.10
5. Step 5: Solve for x
   x = 20,727.10/123.58
6. Step 6: Final answer
   x = 167.73