Finding the Fourth Proportional to 670,453.69, 1,005,016.23 and 314,831.09

Step by Step Solution

1. Step 1: Write the proportion equation
   670,453.69 : 1,005,016.23 = 314,831.09 : x
2. Step 2: Convert to fraction form
   670,453.69/1,005,016.23 = 314,831.09/x
3. Step 3: Cross multiply
   670,453.69x = 1,005,016.23 × 314,831.09
4. Step 4: Simplify right side
   670,453.69x = 316,410,355,158.59
5. Step 5: Solve for x
   x = 316,410,355,158.59/670,453.69
6. Step 6: Final answer
   x = 471,934.69