Finding the Fourth Proportional to 363,690.72, 501,857.17 and 202,560.73

Step by Step Solution

1. Step 1: Write the proportion equation
   363,690.72 : 501,857.17 = 202,560.73 : x
2. Step 2: Convert to fraction form
   363,690.72/501,857.17 = 202,560.73/x
3. Step 3: Cross multiply
   363,690.72x = 501,857.17 × 202,560.73
4. Step 4: Simplify right side
   363,690.72x = 101,656,552,949.89
5. Step 5: Solve for x
   x = 101,656,552,949.89/363,690.72
6. Step 6: Final answer
   x = 279,513.74