Finding the Fourth Proportional to 216,535.89, 298,826.15 and 121,046.61

Step by Step Solution

1. Step 1: Write the proportion equation
   216,535.89 : 298,826.15 = 121,046.61 : x
2. Step 2: Convert to fraction form
   216,535.89/298,826.15 = 121,046.61/x
3. Step 3: Cross multiply
   216,535.89x = 298,826.15 × 121,046.61
4. Step 4: Simplify right side
   216,535.89x = 36,171,892,436.85
5. Step 5: Solve for x
   x = 36,171,892,436.85/216,535.89
6. Step 6: Final answer
   x = 167,048.02