Finding the Fourth Proportional to 356,665.49, 492,233.59 and 203,726.55

Step by Step Solution

1. Step 1: Write the proportion equation
   356,665.49 : 492,233.59 = 203,726.55 : x
2. Step 2: Convert to fraction form
   356,665.49/492,233.59 = 203,726.55/x
3. Step 3: Cross multiply
   356,665.49x = 492,233.59 × 203,726.55
4. Step 4: Simplify right side
   356,665.49x = 100,281,051,084.82
5. Step 5: Solve for x
   x = 100,281,051,084.82/356,665.49
6. Step 6: Final answer
   x = 281,162.75