Finding the Fourth Proportional to 71,949.72, 107,898.66 and 30,399.96

Step by Step Solution

1. Step 1: Write the proportion equation
   71,949.72 : 107,898.66 = 30,399.96 : x
2. Step 2: Convert to fraction form
   71,949.72/107,898.66 = 30,399.96/x
3. Step 3: Cross multiply
   71,949.72x = 107,898.66 × 30,399.96
4. Step 4: Simplify right side
   71,949.72x = 3,280,114,948.05
5. Step 5: Solve for x
   x = 3,280,114,948.05/71,949.72
6. Step 6: Final answer
   x = 45,588.99