Finding the Fourth Proportional to 51,722.69, 71,377.20 and 30,227.31

Step by Step Solution

1. Step 1: Write the proportion equation
   51,722.69 : 71,377.20 = 30,227.31 : x
2. Step 2: Convert to fraction form
   51,722.69/71,377.20 = 30,227.31/x
3. Step 3: Cross multiply
   51,722.69x = 71,377.20 × 30,227.31
4. Step 4: Simplify right side
   51,722.69x = 2,157,540,751.33
5. Step 5: Solve for x
   x = 2,157,540,751.33/51,722.69
6. Step 6: Final answer
   x = 41,713.63