Finding the Fourth Proportional to 82,270.28, 123,405.02 and 19,940.78

Step by Step Solution

1. Step 1: Write the proportion equation
   82,270.28 : 123,405.02 = 19,940.78 : x
2. Step 2: Convert to fraction form
   82,270.28/123,405.02 = 19,940.78/x
3. Step 3: Cross multiply
   82,270.28x = 123,405.02 × 19,940.78
4. Step 4: Simplify right side
   82,270.28x = 2,460,792,255.01
5. Step 5: Solve for x
   x = 2,460,792,255.01/82,270.28
6. Step 6: Final answer
   x = 29,911.07