Finding the Fourth Proportional to 123.31, 168.94 and 118.70

Step by Step Solution

1. Step 1: Write the proportion equation
   123.31 : 168.94 = 118.70 : x
2. Step 2: Convert to fraction form
   123.31/168.94 = 118.70/x
3. Step 3: Cross multiply
   123.31x = 168.94 × 118.70
4. Step 4: Simplify right side
   123.31x = 20,053.18
5. Step 5: Solve for x
   x = 20,053.18/123.31
6. Step 6: Final answer
   x = 162.62