Finding the Fourth Proportional to 200,096.82, 300,145.68 and 81,768.15

Step by Step Solution

1. Step 1: Write the proportion equation
   200,096.82 : 300,145.68 = 81,768.15 : x
2. Step 2: Convert to fraction form
   200,096.82/300,145.68 = 81,768.15/x
3. Step 3: Cross multiply
   200,096.82x = 300,145.68 × 81,768.15
4. Step 4: Simplify right side
   200,096.82x = 24,542,356,984.09
5. Step 5: Solve for x
   x = 24,542,356,984.09/200,096.82
6. Step 6: Final answer
   x = 122,652.41