Finding the Fourth Proportional to 123.12, 184.72 and 46.09

Step by Step Solution

1. Step 1: Write the proportion equation
   123.12 : 184.72 = 46.09 : x
2. Step 2: Convert to fraction form
   123.12/184.72 = 46.09/x
3. Step 3: Cross multiply
   123.12x = 184.72 × 46.09
4. Step 4: Simplify right side
   123.12x = 8,513.82
5. Step 5: Solve for x
   x = 8,513.82/123.12
6. Step 6: Final answer
   x = 69.15