Finding the Fourth Proportional to 120,144.56, 165,797.67 and 65,696.91

Step by Step Solution

1. Step 1: Write the proportion equation
   120,144.56 : 165,797.67 = 65,696.91 : x
2. Step 2: Convert to fraction form
   120,144.56/165,797.67 = 65,696.91/x
3. Step 3: Cross multiply
   120,144.56x = 165,797.67 × 65,696.91
4. Step 4: Simplify right side
   120,144.56x = 10,892,393,775.21
5. Step 5: Solve for x
   x = 10,892,393,775.21/120,144.56
6. Step 6: Final answer
   x = 90,660.73