Finding the Fourth Proportional to 123.19, 184.58 and 109.42

Step by Step Solution

1. Step 1: Write the proportion equation
   123.19 : 184.58 = 109.42 : x
2. Step 2: Convert to fraction form
   123.19/184.58 = 109.42/x
3. Step 3: Cross multiply
   123.19x = 184.58 × 109.42
4. Step 4: Simplify right side
   123.19x = 20,196.15
5. Step 5: Solve for x
   x = 20,196.15/123.19
6. Step 6: Final answer
   x = 163.95