Finding the Fourth Proportional to 200,078.52, 299,785.50 and 140,789.76

Step by Step Solution

1. Step 1: Write the proportion equation
   200,078.52 : 299,785.50 = 140,789.76 : x
2. Step 2: Convert to fraction form
   200,078.52/299,785.50 = 140,789.76/x
3. Step 3: Cross multiply
   200,078.52x = 299,785.50 × 140,789.76
4. Step 4: Simplify right side
   200,078.52x = 42,206,728,596.48
5. Step 5: Solve for x
   x = 42,206,728,596.48/200,078.52
6. Step 6: Final answer
   x = 210,950.82