Finding the Fourth Proportional to 636,377.72, 878,204.56 and 349,916.26

Step by Step Solution

1. Step 1: Write the proportion equation
   636,377.72 : 878,204.56 = 349,916.26 : x
2. Step 2: Convert to fraction form
   636,377.72/878,204.56 = 349,916.26/x
3. Step 3: Cross multiply
   636,377.72x = 878,204.56 × 349,916.26
4. Step 4: Simplify right side
   636,377.72x = 307,298,055,150.15
5. Step 5: Solve for x
   x = 307,298,055,150.15/636,377.72
6. Step 6: Final answer
   x = 482,886.26