Finding the Fourth Proportional to 52,450.57, 72,391.15 and 30,939

Step by Step Solution

1. Step 1: Write the proportion equation
   52,450.57 : 72,391.15 = 30,939 : x
2. Step 2: Convert to fraction form
   52,450.57/72,391.15 = 30,939/x
3. Step 3: Cross multiply
   52,450.57x = 72,391.15 × 30,939
4. Step 4: Simplify right side
   52,450.57x = 2,239,709,789.85
5. Step 5: Solve for x
   x = 2,239,709,789.85/52,450.57
6. Step 6: Final answer
   x = 42,701.34