Finding the Fourth Proportional to 123.35, 184.72 and 103.15

Step by Step Solution

1. Step 1: Write the proportion equation
   123.35 : 184.72 = 103.15 : x
2. Step 2: Convert to fraction form
   123.35/184.72 = 103.15/x
3. Step 3: Cross multiply
   123.35x = 184.72 × 103.15
4. Step 4: Simplify right side
   123.35x = 19,053.87
5. Step 5: Solve for x
   x = 19,053.87/123.35
6. Step 6: Final answer
   x = 154.47