Finding the Fourth Proportional to 123.88, 185.75 and 42.69

Step by Step Solution

1. Step 1: Write the proportion equation
   123.88 : 185.75 = 42.69 : x
2. Step 2: Convert to fraction form
   123.88/185.75 = 42.69/x
3. Step 3: Cross multiply
   123.88x = 185.75 × 42.69
4. Step 4: Simplify right side
   123.88x = 7,929.67
5. Step 5: Solve for x
   x = 7,929.67/123.88
6. Step 6: Final answer
   x = 64.01