Finding the Fourth Proportional to 468,665.81, 646,757.83 and 253,805.21

Step by Step Solution

1. Step 1: Write the proportion equation
   468,665.81 : 646,757.83 = 253,805.21 : x
2. Step 2: Convert to fraction form
   468,665.81/646,757.83 = 253,805.21/x
3. Step 3: Cross multiply
   468,665.81x = 646,757.83 × 253,805.21
4. Step 4: Simplify right side
   468,665.81x = 164,150,506,862.29
5. Step 5: Solve for x
   x = 164,150,506,862.29/468,665.81
6. Step 6: Final answer
   x = 350,250.65