Finding the Fourth Proportional to 261,485.22, 361,022.18 and 200,945.82

Step by Step Solution

1. Step 1: Write the proportion equation
   261,485.22 : 361,022.18 = 200,945.82 : x
2. Step 2: Convert to fraction form
   261,485.22/361,022.18 = 200,945.82/x
3. Step 3: Cross multiply
   261,485.22x = 361,022.18 × 200,945.82
4. Step 4: Simplify right side
   261,485.22x = 72,545,897,598.10
5. Step 5: Solve for x
   x = 72,545,897,598.10/261,485.22
6. Step 6: Final answer
   x = 277,437.85