Finding the Fourth Proportional to 50,720.86, 69,972.78 and 30,566.29

Step by Step Solution

1. Step 1: Write the proportion equation
   50,720.86 : 69,972.78 = 30,566.29 : x
2. Step 2: Convert to fraction form
   50,720.86/69,972.78 = 30,566.29/x
3. Step 3: Cross multiply
   50,720.86x = 69,972.78 × 30,566.29
4. Step 4: Simplify right side
   50,720.86x = 2,138,808,285.59
5. Step 5: Solve for x
   x = 2,138,808,285.59/50,720.86
6. Step 6: Final answer
   x = 42,168.22