Finding the Fourth Proportional to 79,857.72, 119,864.49 and 65,959.34

Step by Step Solution

1. Step 1: Write the proportion equation
   79,857.72 : 119,864.49 = 65,959.34 : x
2. Step 2: Convert to fraction form
   79,857.72/119,864.49 = 65,959.34/x
3. Step 3: Cross multiply
   79,857.72x = 119,864.49 × 65,959.34
4. Step 4: Simplify right side
   79,857.72x = 7,906,181,803.17
5. Step 5: Solve for x
   x = 7,906,181,803.17/79,857.72
6. Step 6: Final answer
   x = 99,003.35