Finding the Fourth Proportional to 200,105.62, 299,825.18 and 140,816.76

Step by Step Solution

1. Step 1: Write the proportion equation
   200,105.62 : 299,825.18 = 140,816.76 : x
2. Step 2: Convert to fraction form
   200,105.62/299,825.18 = 140,816.76/x
3. Step 3: Cross multiply
   200,105.62x = 299,825.18 × 140,816.76
4. Step 4: Simplify right side
   200,105.62x = 42,220,410,414.02
5. Step 5: Solve for x
   x = 42,220,410,414.02/200,105.62
6. Step 6: Final answer
   x = 210,990.63