Finding the Fourth Proportional to 143,568.55, 213,879.52 and 137,091.62

Step by Step Solution

1. Step 1: Write the proportion equation
   143,568.55 : 213,879.52 = 137,091.62 : x
2. Step 2: Convert to fraction form
   143,568.55/213,879.52 = 137,091.62/x
3. Step 3: Cross multiply
   143,568.55x = 213,879.52 × 137,091.62
4. Step 4: Simplify right side
   143,568.55x = 29,321,090,587.69
5. Step 5: Solve for x
   x = 29,321,090,587.69/143,568.55
6. Step 6: Final answer
   x = 204,230.59