Finding the Fourth Proportional to 693,147.71, 1,039,839.78 and 309,035.94

Step by Step Solution

1. Step 1: Write the proportion equation
   693,147.71 : 1,039,839.78 = 309,035.94 : x
2. Step 2: Convert to fraction form
   693,147.71/1,039,839.78 = 309,035.94/x
3. Step 3: Cross multiply
   693,147.71x = 1,039,839.78 × 309,035.94
4. Step 4: Simplify right side
   693,147.71x = 321,347,863,861.69
5. Step 5: Solve for x
   x = 321,347,863,861.69/693,147.71
6. Step 6: Final answer
   x = 463,606.62