Finding the Fourth Proportional to 216,003.78, 298,086.08 and 120,514.50

Step by Step Solution

1. Step 1: Write the proportion equation
   216,003.78 : 298,086.08 = 120,514.50 : x
2. Step 2: Convert to fraction form
   216,003.78/298,086.08 = 120,514.50/x
3. Step 3: Cross multiply
   216,003.78x = 298,086.08 × 120,514.50
4. Step 4: Simplify right side
   216,003.78x = 35,923,694,285.59
5. Step 5: Solve for x
   x = 35,923,694,285.59/216,003.78
6. Step 6: Final answer
   x = 166,310.49