Finding the Fourth Proportional to 123.50, 186.18 and 116.88

Step by Step Solution

1. Step 1: Write the proportion equation
   123.50 : 186.18 = 116.88 : x
2. Step 2: Convert to fraction form
   123.50/186.18 = 116.88/x
3. Step 3: Cross multiply
   123.50x = 186.18 × 116.88
4. Step 4: Simplify right side
   123.50x = 21,760.72
5. Step 5: Solve for x
   x = 21,760.72/123.50
6. Step 6: Final answer
   x = 176.21