Finding the Fourth Proportional to 629,301.78, 868,405.59 and 342,804.78

Step by Step Solution

1. Step 1: Write the proportion equation
   629,301.78 : 868,405.59 = 342,804.78 : x
2. Step 2: Convert to fraction form
   629,301.78/868,405.59 = 342,804.78/x
3. Step 3: Cross multiply
   629,301.78x = 868,405.59 × 342,804.78
4. Step 4: Simplify right side
   629,301.78x = 297,693,587,230.72
5. Step 5: Solve for x
   x = 297,693,587,230.72/629,301.78
6. Step 6: Final answer
   x = 473,053.78