Finding the Fourth Proportional to 50,787.57, 70,086.69 and 28,431.57

Step by Step Solution

1. Step 1: Write the proportion equation
   50,787.57 : 70,086.69 = 28,431.57 : x
2. Step 2: Convert to fraction form
   50,787.57/70,086.69 = 28,431.57/x
3. Step 3: Cross multiply
   50,787.57x = 70,086.69 × 28,431.57
4. Step 4: Simplify right side
   50,787.57x = 1,992,674,632.80
5. Step 5: Solve for x
   x = 1,992,674,632.80/50,787.57
6. Step 6: Final answer
   x = 39,235.48