Finding the Fourth Proportional to 50,289.06, 69,377.67 and 30,139.50

Step by Step Solution

1. Step 1: Write the proportion equation
   50,289.06 : 69,377.67 = 30,139.50 : x
2. Step 2: Convert to fraction form
   50,289.06/69,377.67 = 30,139.50/x
3. Step 3: Cross multiply
   50,289.06x = 69,377.67 × 30,139.50
4. Step 4: Simplify right side
   50,289.06x = 2,091,008,284.97
5. Step 5: Solve for x
   x = 2,091,008,284.97/50,289.06
6. Step 6: Final answer
   x = 41,579.78