Finding the Fourth Proportional to 353,974.10, 531,575.55 and 188,086.10

Step by Step Solution

1. Step 1: Write the proportion equation
   353,974.10 : 531,575.55 = 188,086.10 : x
2. Step 2: Convert to fraction form
   353,974.10/531,575.55 = 188,086.10/x
3. Step 3: Cross multiply
   353,974.10x = 531,575.55 × 188,086.10
4. Step 4: Simplify right side
   353,974.10x = 99,981,972,054.86
5. Step 5: Solve for x
   x = 99,981,972,054.86/353,974.10
6. Step 6: Final answer
   x = 282,455.61