Finding the Fourth Proportional to 120,364.22, 166,101.42 and 65,173.28

Step by Step Solution

1. Step 1: Write the proportion equation
   120,364.22 : 166,101.42 = 65,173.28 : x
2. Step 2: Convert to fraction form
   120,364.22/166,101.42 = 65,173.28/x
3. Step 3: Cross multiply
   120,364.22x = 166,101.42 × 65,173.28
4. Step 4: Simplify right side
   120,364.22x = 10,825,373,523.55
5. Step 5: Solve for x
   x = 10,825,373,523.55/120,364.22
6. Step 6: Final answer
   x = 89,938.47