Finding the Fourth Proportional to 208,769.98, 287,704.83 and 204,931.30

Step by Step Solution

1. Step 1: Write the proportion equation
   208,769.98 : 287,704.83 = 204,931.30 : x
2. Step 2: Convert to fraction form
   208,769.98/287,704.83 = 204,931.30/x
3. Step 3: Cross multiply
   208,769.98x = 287,704.83 × 204,931.30
4. Step 4: Simplify right side
   208,769.98x = 58,959,724,828.18
5. Step 5: Solve for x
   x = 58,959,724,828.18/208,769.98
6. Step 6: Final answer
   x = 282,414.76