Finding the Fourth Proportional to 50,989.64, 70,389.27 and 30,581.42

Step by Step Solution

1. Step 1: Write the proportion equation
   50,989.64 : 70,389.27 = 30,581.42 : x
2. Step 2: Convert to fraction form
   50,989.64/70,389.27 = 30,581.42/x
3. Step 3: Cross multiply
   50,989.64x = 70,389.27 × 30,581.42
4. Step 4: Simplify right side
   50,989.64x = 2,152,603,477.42
5. Step 5: Solve for x
   x = 2,152,603,477.42/50,989.64
6. Step 6: Final answer
   x = 42,216.49