Finding the Fourth Proportional to 120,422.69, 166,183.31 and 72,676.04

Step by Step Solution

1. Step 1: Write the proportion equation
   120,422.69 : 166,183.31 = 72,676.04 : x
2. Step 2: Convert to fraction form
   120,422.69/166,183.31 = 72,676.04/x
3. Step 3: Cross multiply
   120,422.69x = 166,183.31 × 72,676.04
4. Step 4: Simplify right side
   120,422.69x = 12,077,544,884.89
5. Step 5: Solve for x
   x = 12,077,544,884.89/120,422.69
6. Step 6: Final answer
   x = 100,292.93