Finding the Fourth Proportional to 47,938.72, 71,914.56 and 45,022.72

Step by Step Solution

1. Step 1: Write the proportion equation
   47,938.72 : 71,914.56 = 45,022.72 : x
2. Step 2: Convert to fraction form
   47,938.72/71,914.56 = 45,022.72/x
3. Step 3: Cross multiply
   47,938.72x = 71,914.56 × 45,022.72
4. Step 4: Simplify right side
   47,938.72x = 3,237,789,098.80
5. Step 5: Solve for x
   x = 3,237,789,098.80/47,938.72
6. Step 6: Final answer
   x = 67,540.17