Finding the Fourth Proportional to 450,892.50, 622,231.83 and 249,688.50

Step by Step Solution

1. Step 1: Write the proportion equation
   450,892.50 : 622,231.83 = 249,688.50 : x
2. Step 2: Convert to fraction form
   450,892.50/622,231.83 = 249,688.50/x
3. Step 3: Cross multiply
   450,892.50x = 622,231.83 × 249,688.50
4. Step 4: Simplify right side
   450,892.50x = 155,364,132,284.96
5. Step 5: Solve for x
   x = 155,364,132,284.96/450,892.50
6. Step 6: Final answer
   x = 344,570.23