Finding the Fourth Proportional to 47,988.72, 71,994.42 and 21,693.42

Step by Step Solution

1. Step 1: Write the proportion equation
   47,988.72 : 71,994.42 = 21,693.42 : x
2. Step 2: Convert to fraction form
   47,988.72/71,994.42 = 21,693.42/x
3. Step 3: Cross multiply
   47,988.72x = 71,994.42 × 21,693.42
4. Step 4: Simplify right side
   47,988.72x = 1,561,805,190.72
5. Step 5: Solve for x
   x = 1,561,805,190.72/47,988.72
6. Step 6: Final answer
   x = 32,545.26