Finding the Fourth Proportional to 285,196.69, 428,215.57 and 159,083.34

Step by Step Solution

1. Step 1: Write the proportion equation
   285,196.69 : 428,215.57 = 159,083.34 : x
2. Step 2: Convert to fraction form
   285,196.69/428,215.57 = 159,083.34/x
3. Step 3: Cross multiply
   285,196.69x = 428,215.57 × 159,083.34
4. Step 4: Simplify right side
   285,196.69x = 68,121,963,115.60
5. Step 5: Solve for x
   x = 68,121,963,115.60/285,196.69
6. Step 6: Final answer
   x = 238,859.59