Finding the Fourth Proportional to 34,168.72, 51,285.12 and 21,046.72

Step by Step Solution

1. Step 1: Write the proportion equation
   34,168.72 : 51,285.12 = 21,046.72 : x
2. Step 2: Convert to fraction form
   34,168.72/51,285.12 = 21,046.72/x
3. Step 3: Cross multiply
   34,168.72x = 51,285.12 × 21,046.72
4. Step 4: Simplify right side
   34,168.72x = 1,079,383,560.81
5. Step 5: Solve for x
   x = 1,079,383,560.81/34,168.72
6. Step 6: Final answer
   x = 31,589.82