Finding the Fourth Proportional to 355,969.18, 491,140.18 and 202,951.59

Step by Step Solution

1. Step 1: Write the proportion equation
   355,969.18 : 491,140.18 = 202,951.59 : x
2. Step 2: Convert to fraction form
   355,969.18/491,140.18 = 202,951.59/x
3. Step 3: Cross multiply
   355,969.18x = 491,140.18 × 202,951.59
4. Step 4: Simplify right side
   355,969.18x = 99,677,680,443.89
5. Step 5: Solve for x
   x = 99,677,680,443.89/355,969.18
6. Step 6: Final answer
   x = 280,017.73