Finding the Fourth Proportional to 628,969.29, 867,951.56 and 342,488.69

Step by Step Solution

1. Step 1: Write the proportion equation
   628,969.29 : 867,951.56 = 342,488.69 : x
2. Step 2: Convert to fraction form
   628,969.29/867,951.56 = 342,488.69/x
3. Step 3: Cross multiply
   628,969.29x = 867,951.56 × 342,488.69
4. Step 4: Simplify right side
   628,969.29x = 297,263,591,055.41
5. Step 5: Solve for x
   x = 297,263,591,055.41/628,969.29
6. Step 6: Final answer
   x = 472,620.20