Finding the Fourth Proportional to 50,827.78, 70,168.88 and 39,471.78

Step by Step Solution

1. Step 1: Write the proportion equation
   50,827.78 : 70,168.88 = 39,471.78 : x
2. Step 2: Convert to fraction form
   50,827.78/70,168.88 = 39,471.78/x
3. Step 3: Cross multiply
   50,827.78x = 70,168.88 × 39,471.78
4. Step 4: Simplify right side
   50,827.78x = 2,769,690,692.89
5. Step 5: Solve for x
   x = 2,769,690,692.89/50,827.78
6. Step 6: Final answer
   x = 54,491.67