Finding the Fourth Proportional to 82,269.78, 123,404.27 and 19,940.28

Step by Step Solution

1. Step 1: Write the proportion equation
   82,269.78 : 123,404.27 = 19,940.28 : x
2. Step 2: Convert to fraction form
   82,269.78/123,404.27 = 19,940.28/x
3. Step 3: Cross multiply
   82,269.78x = 123,404.27 × 19,940.28
4. Step 4: Simplify right side
   82,269.78x = 2,460,715,597.29
5. Step 5: Solve for x
   x = 2,460,715,597.29/82,269.78
6. Step 6: Final answer
   x = 29,910.32