Finding the Fourth Proportional to 493,456.28, 680,685.43 and 297,086.06

Step by Step Solution

1. Step 1: Write the proportion equation
   493,456.28 : 680,685.43 = 297,086.06 : x
2. Step 2: Convert to fraction form
   493,456.28/680,685.43 = 297,086.06/x
3. Step 3: Cross multiply
   493,456.28x = 680,685.43 × 297,086.06
4. Step 4: Simplify right side
   493,456.28x = 202,222,147,609.25
5. Step 5: Solve for x
   x = 202,222,147,609.25/493,456.28
6. Step 6: Final answer
   x = 409,807.63