Finding the Fourth Proportional to 636,328.72, 878,111.04 and 349,846.72

Step by Step Solution

1. Step 1: Write the proportion equation
   636,328.72 : 878,111.04 = 349,846.72 : x
2. Step 2: Convert to fraction form
   636,328.72/878,111.04 = 349,846.72/x
3. Step 3: Cross multiply
   636,328.72x = 878,111.04 × 349,846.72
4. Step 4: Simplify right side
   636,328.72x = 307,204,267,139.79
5. Step 5: Solve for x
   x = 307,204,267,139.79/636,328.72
6. Step 6: Final answer
   x = 482,776.05