Finding the Fourth Proportional to 50,721.86, 69,974.16 and 30,567.29

Step by Step Solution

1. Step 1: Write the proportion equation
   50,721.86 : 69,974.16 = 30,567.29 : x
2. Step 2: Convert to fraction form
   50,721.86/69,974.16 = 30,567.29/x
3. Step 3: Cross multiply
   50,721.86x = 69,974.16 × 30,567.29
4. Step 4: Simplify right side
   50,721.86x = 2,138,920,441.23
5. Step 5: Solve for x
   x = 2,138,920,441.23/50,721.86
6. Step 6: Final answer
   x = 42,169.60