Finding the Fourth Proportional to 514,821.89, 709,666.72 and 361,429.76

Step by Step Solution

1. Step 1: Write the proportion equation
   514,821.89 : 709,666.72 = 361,429.76 : x
2. Step 2: Convert to fraction form
   514,821.89/709,666.72 = 361,429.76/x
3. Step 3: Cross multiply
   514,821.89x = 709,666.72 × 361,429.76
4. Step 4: Simplify right side
   514,821.89x = 256,494,673,160.18
5. Step 5: Solve for x
   x = 256,494,673,160.18/514,821.89
6. Step 6: Final answer
   x = 498,220.21