Finding the Fourth Proportional to 636,301.89, 878,088.72 and 349,819.47

Step by Step Solution

1. Step 1: Write the proportion equation
   636,301.89 : 878,088.72 = 349,819.47 : x
2. Step 2: Convert to fraction form
   636,301.89/878,088.72 = 349,819.47/x
3. Step 3: Cross multiply
   636,301.89x = 878,088.72 × 349,819.47
4. Step 4: Simplify right side
   636,301.89x = 307,172,530,643.38
5. Step 5: Solve for x
   x = 307,172,530,643.38/636,301.89
6. Step 6: Final answer
   x = 482,746.53