Finding the Fourth Proportional to 216,017.82, 298,105.65 and 120,529.89

Step by Step Solution

1. Step 1: Write the proportion equation
   216,017.82 : 298,105.65 = 120,529.89 : x
2. Step 2: Convert to fraction form
   216,017.82/298,105.65 = 120,529.89/x
3. Step 3: Cross multiply
   216,017.82x = 298,105.65 × 120,529.89
4. Step 4: Simplify right side
   216,017.82x = 35,930,641,202.88
5. Step 5: Solve for x
   x = 35,930,641,202.88/216,017.82
6. Step 6: Final answer
   x = 166,331.84