Finding the Fourth Proportional to 117.72, 176.31 and 116.10

Step by Step Solution

1. Step 1: Write the proportion equation
   117.72 : 176.31 = 116.10 : x
2. Step 2: Convert to fraction form
   117.72/176.31 = 116.10/x
3. Step 3: Cross multiply
   117.72x = 176.31 × 116.10
4. Step 4: Simplify right side
   117.72x = 20,469.59
5. Step 5: Solve for x
   x = 20,469.59/117.72
6. Step 6: Final answer
   x = 173.88