Finding the Fourth Proportional to 111.83, 167.70 and 107.10

Step by Step Solution

1. Step 1: Write the proportion equation
   111.83 : 167.70 = 107.10 : x
2. Step 2: Convert to fraction form
   111.83/167.70 = 107.10/x
3. Step 3: Cross multiply
   111.83x = 167.70 × 107.10
4. Step 4: Simplify right side
   111.83x = 17,960.40
5. Step 5: Solve for x
   x = 17,960.40/111.83
6. Step 6: Final answer
   x = 160.60