Finding the Fourth Proportional to 50,141.58, 69,178.41 and 28,920.30

Step by Step Solution

1. Step 1: Write the proportion equation
   50,141.58 : 69,178.41 = 28,920.30 : x
2. Step 2: Convert to fraction form
   50,141.58/69,178.41 = 28,920.30/x
3. Step 3: Cross multiply
   50,141.58x = 69,178.41 × 28,920.30
4. Step 4: Simplify right side
   50,141.58x = 2,000,660,370.72
5. Step 5: Solve for x
   x = 2,000,660,370.72/50,141.58
6. Step 6: Final answer
   x = 39,900.23