Finding the Fourth Proportional to 412,399.49, 569,134.71 and 231,169.82

Step by Step Solution

1. Step 1: Write the proportion equation
   412,399.49 : 569,134.71 = 231,169.82 : x
2. Step 2: Convert to fraction form
   412,399.49/569,134.71 = 231,169.82/x
3. Step 3: Cross multiply
   412,399.49x = 569,134.71 × 231,169.82
4. Step 4: Simplify right side
   412,399.49x = 131,566,765,620.78
5. Step 5: Solve for x
   x = 131,566,765,620.78/412,399.49
6. Step 6: Final answer
   x = 319,027.47