Finding the Fourth Proportional to 200,065.86, 299,765.61 and 140,776.97

Step by Step Solution

1. Step 1: Write the proportion equation
   200,065.86 : 299,765.61 = 140,776.97 : x
2. Step 2: Convert to fraction form
   200,065.86/299,765.61 = 140,776.97/x
3. Step 3: Cross multiply
   200,065.86x = 299,765.61 × 140,776.97
4. Step 4: Simplify right side
   200,065.86x = 42,200,092,787.17
5. Step 5: Solve for x
   x = 42,200,092,787.17/200,065.86
6. Step 6: Final answer
   x = 210,931.00