Finding the Fourth Proportional to 216,429.27, 298,671.77 and 120,936.05

Step by Step Solution

1. Step 1: Write the proportion equation
   216,429.27 : 298,671.77 = 120,936.05 : x
2. Step 2: Convert to fraction form
   216,429.27/298,671.77 = 120,936.05/x
3. Step 3: Cross multiply
   216,429.27x = 298,671.77 × 120,936.05
4. Step 4: Simplify right side
   216,429.27x = 36,120,182,012.27
5. Step 5: Solve for x
   x = 36,120,182,012.27/216,429.27
6. Step 6: Final answer
   x = 166,891.39