Finding the Fourth Proportional to 269,393, 404,105.70 and 82,406.12

Step by Step Solution

1. Step 1: Write the proportion equation
   269,393 : 404,105.70 = 82,406.12 : x
2. Step 2: Convert to fraction form
   269,393/404,105.70 = 82,406.12/x
3. Step 3: Cross multiply
   269,393x = 404,105.70 × 82,406.12
4. Step 4: Simplify right side
   269,393x = 33,300,782,806.88
5. Step 5: Solve for x
   x = 33,300,782,806.88/269,393
6. Step 6: Final answer
   x = 123,614.14