Finding the Fourth Proportional to 111,744, 167,626.08 and 28,638.72

Step by Step Solution

1. Step 1: Write the proportion equation
   111,744 : 167,626.08 = 28,638.72 : x
2. Step 2: Convert to fraction form
   111,744/167,626.08 = 28,638.72/x
3. Step 3: Cross multiply
   111,744x = 167,626.08 × 28,638.72
4. Step 4: Simplify right side
   111,744x = 4,800,596,369.82
5. Step 5: Solve for x
   x = 4,800,596,369.82/111,744
6. Step 6: Final answer
   x = 42,960.66