Finding the Fourth Proportional to 50,878.72, 70,212.18 and 28,522.72

Step by Step Solution

1. Step 1: Write the proportion equation
   50,878.72 : 70,212.18 = 28,522.72 : x
2. Step 2: Convert to fraction form
   50,878.72/70,212.18 = 28,522.72/x
3. Step 3: Cross multiply
   50,878.72x = 70,212.18 × 28,522.72
4. Step 4: Simplify right side
   50,878.72x = 2,002,642,350.73
5. Step 5: Solve for x
   x = 2,002,642,350.73/50,878.72
6. Step 6: Final answer
   x = 39,361.10