Finding the Fourth Proportional to 120,140.58, 165,789.83 and 65,694.03

Step by Step Solution

1. Step 1: Write the proportion equation
   120,140.58 : 165,789.83 = 65,694.03 : x
2. Step 2: Convert to fraction form
   120,140.58/165,789.83 = 65,694.03/x
3. Step 3: Cross multiply
   120,140.58x = 165,789.83 × 65,694.03
4. Step 4: Simplify right side
   120,140.58x = 10,891,401,737.24
5. Step 5: Solve for x
   x = 10,891,401,737.24/120,140.58
6. Step 6: Final answer
   x = 90,655.48