Finding the Fourth Proportional to 123.29, 185.15 and 117.89

Step by Step Solution

1. Step 1: Write the proportion equation
   123.29 : 185.15 = 117.89 : x
2. Step 2: Convert to fraction form
   123.29/185.15 = 117.89/x
3. Step 3: Cross multiply
   123.29x = 185.15 × 117.89
4. Step 4: Simplify right side
   123.29x = 21,827.33
5. Step 5: Solve for x
   x = 21,827.33/123.29
6. Step 6: Final answer
   x = 177.04