Finding the Fourth Proportional to 309,007.14, 426,368.22 and 188,067.42

Step by Step Solution

1. Step 1: Write the proportion equation
   309,007.14 : 426,368.22 = 188,067.42 : x
2. Step 2: Convert to fraction form
   309,007.14/426,368.22 = 188,067.42/x
3. Step 3: Cross multiply
   309,007.14x = 426,368.22 × 188,067.42
4. Step 4: Simplify right side
   309,007.14x = 80,185,971,105.39
5. Step 5: Solve for x
   x = 80,185,971,105.39/309,007.14
6. Step 6: Final answer
   x = 259,495.53