Finding the Fourth Proportional to 72,140.72, 108,222.71 and 22,220.80

Step by Step Solution

1. Step 1: Write the proportion equation
   72,140.72 : 108,222.71 = 22,220.80 : x
2. Step 2: Convert to fraction form
   72,140.72/108,222.71 = 22,220.80/x
3. Step 3: Cross multiply
   72,140.72x = 108,222.71 × 22,220.80
4. Step 4: Simplify right side
   72,140.72x = 2,404,794,812.71
5. Step 5: Solve for x
   x = 2,404,794,812.71/72,140.72
6. Step 6: Final answer
   x = 33,334.78