Finding the Fourth Proportional to 47,760.91, 71,616.72 and 21,443.11

Step by Step Solution

1. Step 1: Write the proportion equation
   47,760.91 : 71,616.72 = 21,443.11 : x
2. Step 2: Convert to fraction form
   47,760.91/71,616.72 = 21,443.11/x
3. Step 3: Cross multiply
   47,760.91x = 71,616.72 × 21,443.11
4. Step 4: Simplify right side
   47,760.91x = 1,535,685,204.80
5. Step 5: Solve for x
   x = 1,535,685,204.80/47,760.91
6. Step 6: Final answer
   x = 32,153.60