Finding the Fourth Proportional to 31,423.72, 47,069.34 and 21,516.52

Step by Step Solution

1. Step 1: Write the proportion equation
   31,423.72 : 47,069.34 = 21,516.52 : x
2. Step 2: Convert to fraction form
   31,423.72/47,069.34 = 21,516.52/x
3. Step 3: Cross multiply
   31,423.72x = 47,069.34 × 21,516.52
4. Step 4: Simplify right side
   31,423.72x = 1,012,768,395.50
5. Step 5: Solve for x
   x = 1,012,768,395.50/31,423.72
6. Step 6: Final answer
   x = 32,229.42