Finding the Fourth Proportional to 120,944.72, 166,985.16 and 108,158.24

Step by Step Solution

1. Step 1: Write the proportion equation
   120,944.72 : 166,985.16 = 108,158.24 : x
2. Step 2: Convert to fraction form
   120,944.72/166,985.16 = 108,158.24/x
3. Step 3: Cross multiply
   120,944.72x = 166,985.16 × 108,158.24
4. Step 4: Simplify right side
   120,944.72x = 18,060,821,011.72
5. Step 5: Solve for x
   x = 18,060,821,011.72/120,944.72
6. Step 6: Final answer
   x = 149,331.21