Finding the Fourth Proportional to 118.47, 176.69 and 116.31

Step by Step Solution

1. Step 1: Write the proportion equation
   118.47 : 176.69 = 116.31 : x
2. Step 2: Convert to fraction form
   118.47/176.69 = 116.31/x
3. Step 3: Cross multiply
   118.47x = 176.69 × 116.31
4. Step 4: Simplify right side
   118.47x = 20,551.77
5. Step 5: Solve for x
   x = 20,551.77/118.47
6. Step 6: Final answer
   x = 173.47