Finding the Fourth Proportional to 123.42, 184.89 and 69.15

Step by Step Solution

1. Step 1: Write the proportion equation
   123.42 : 184.89 = 69.15 : x
2. Step 2: Convert to fraction form
   123.42/184.89 = 69.15/x
3. Step 3: Cross multiply
   123.42x = 184.89 × 69.15
4. Step 4: Simplify right side
   123.42x = 12,785.14
5. Step 5: Solve for x
   x = 12,785.14/123.42
6. Step 6: Final answer
   x = 103.59