Finding the Fourth Proportional to 447,930.53, 618,144.98 and 243,980.82

Step by Step Solution

1. Step 1: Write the proportion equation
   447,930.53 : 618,144.98 = 243,980.82 : x
2. Step 2: Convert to fraction form
   447,930.53/618,144.98 = 243,980.82/x
3. Step 3: Cross multiply
   447,930.53x = 618,144.98 × 243,980.82
4. Step 4: Simplify right side
   447,930.53x = 150,815,519,099.28
5. Step 5: Solve for x
   x = 150,815,519,099.28/447,930.53
6. Step 6: Final answer
   x = 336,693.99