Finding the Fourth Proportional to 51,031.57, 76,530.33 and 21,443.89

Step by Step Solution

1. Step 1: Write the proportion equation
   51,031.57 : 76,530.33 = 21,443.89 : x
2. Step 2: Convert to fraction form
   51,031.57/76,530.33 = 21,443.89/x
3. Step 3: Cross multiply
   51,031.57x = 76,530.33 × 21,443.89
4. Step 4: Simplify right side
   51,031.57x = 1,641,107,978.18
5. Step 5: Solve for x
   x = 1,641,107,978.18/51,031.57
6. Step 6: Final answer
   x = 32,158.68