Finding the Fourth Proportional to 123.94, 185.76 and 69.88

Step by Step Solution

1. Step 1: Write the proportion equation
   123.94 : 185.76 = 69.88 : x
2. Step 2: Convert to fraction form
   123.94/185.76 = 69.88/x
3. Step 3: Cross multiply
   123.94x = 185.76 × 69.88
4. Step 4: Simplify right side
   123.94x = 12,980.91
5. Step 5: Solve for x
   x = 12,980.91/123.94
6. Step 6: Final answer
   x = 104.74