Finding the Fourth Proportional to 112.63, 167.71 and 106.69

Step by Step Solution

1. Step 1: Write the proportion equation
   112.63 : 167.71 = 106.69 : x
2. Step 2: Convert to fraction form
   112.63/167.71 = 106.69/x
3. Step 3: Cross multiply
   112.63x = 167.71 × 106.69
4. Step 4: Simplify right side
   112.63x = 17,892.98
5. Step 5: Solve for x
   x = 17,892.98/112.63
6. Step 6: Final answer
   x = 158.87