Finding the Fourth Proportional to 450,429.72, 621,584.82 and 249,225.72

Step by Step Solution

1. Step 1: Write the proportion equation
   450,429.72 : 621,584.82 = 249,225.72 : x
2. Step 2: Convert to fraction form
   450,429.72/621,584.82 = 249,225.72/x
3. Step 3: Cross multiply
   450,429.72x = 621,584.82 × 249,225.72
4. Step 4: Simplify right side
   450,429.72x = 154,914,924,305.57
5. Step 5: Solve for x
   x = 154,914,924,305.57/450,429.72
6. Step 6: Final answer
   x = 343,926.96