Finding the Fourth Proportional to 213,402.09, 294,152.81 and 144,469.83

Step by Step Solution

1. Step 1: Write the proportion equation
   213,402.09 : 294,152.81 = 144,469.83 : x
2. Step 2: Convert to fraction form
   213,402.09/294,152.81 = 144,469.83/x
3. Step 3: Cross multiply
   213,402.09x = 294,152.81 × 144,469.83
4. Step 4: Simplify right side
   213,402.09x = 42,496,205,732.37
5. Step 5: Solve for x
   x = 42,496,205,732.37/213,402.09
6. Step 6: Final answer
   x = 199,136.78