Finding the Fourth Proportional to 111,643.27, 167,451.69 and 31,688.29

Step by Step Solution

1. Step 1: Write the proportion equation
   111,643.27 : 167,451.69 = 31,688.29 : x
2. Step 2: Convert to fraction form
   111,643.27/167,451.69 = 31,688.29/x
3. Step 3: Cross multiply
   111,643.27x = 167,451.69 × 31,688.29
4. Step 4: Simplify right side
   111,643.27x = 5,306,257,713.71
5. Step 5: Solve for x
   x = 5,306,257,713.71/111,643.27
6. Step 6: Final answer
   x = 47,528.68