Finding the Fourth Proportional to 636,086.72, 877,805.16 and 349,613.48

Step by Step Solution

1. Step 1: Write the proportion equation
   636,086.72 : 877,805.16 = 349,613.48 : x
2. Step 2: Convert to fraction form
   636,086.72/877,805.16 = 349,613.48/x
3. Step 3: Cross multiply
   636,086.72x = 877,805.16 × 349,613.48
4. Step 4: Simplify right side
   636,086.72x = 306,892,516,749.56
5. Step 5: Solve for x
   x = 306,892,516,749.56/636,086.72
6. Step 6: Final answer
   x = 482,469.62