Finding the Fourth Proportional to 504,930.89, 756,741.89 and 205,063.12

Step by Step Solution

1. Step 1: Write the proportion equation
   504,930.89 : 756,741.89 = 205,063.12 : x
2. Step 2: Convert to fraction form
   504,930.89/756,741.89 = 205,063.12/x
3. Step 3: Cross multiply
   504,930.89x = 756,741.89 × 205,063.12
4. Step 4: Simplify right side
   504,930.89x = 155,179,852,998.10
5. Step 5: Solve for x
   x = 155,179,852,998.10/504,930.89
6. Step 6: Final answer
   x = 307,328.90