Finding the Fourth Proportional to 624,949.71, 937,468.71 and 309,321.87

Step by Step Solution

1. Step 1: Write the proportion equation
   624,949.71 : 937,468.71 = 309,321.87 : x
2. Step 2: Convert to fraction form
   624,949.71/937,468.71 = 309,321.87/x
3. Step 3: Cross multiply
   624,949.71x = 937,468.71 × 309,321.87
4. Step 4: Simplify right side
   624,949.71x = 289,979,574,443.69
5. Step 5: Solve for x
   x = 289,979,574,443.69/624,949.71
6. Step 6: Final answer
   x = 464,004.65