Finding the Fourth Proportional to 505,146.42, 697,103.56 and 275,705.82

Step by Step Solution

1. Step 1: Write the proportion equation
   505,146.42 : 697,103.56 = 275,705.82 : x
2. Step 2: Convert to fraction form
   505,146.42/697,103.56 = 275,705.82/x
3. Step 3: Cross multiply
   505,146.42x = 697,103.56 × 275,705.82
4. Step 4: Simplify right side
   505,146.42x = 192,195,508,634.72
5. Step 5: Solve for x
   x = 192,195,508,634.72/505,146.42
6. Step 6: Final answer
   x = 380,474.85