Finding the Fourth Proportional to 50,821.50, 70,133.67 and 30,949.50

Step by Step Solution

1. Step 1: Write the proportion equation
   50,821.50 : 70,133.67 = 30,949.50 : x
2. Step 2: Convert to fraction form
   50,821.50/70,133.67 = 30,949.50/x
3. Step 3: Cross multiply
   50,821.50x = 70,133.67 × 30,949.50
4. Step 4: Simplify right side
   50,821.50x = 2,170,602,019.67
5. Step 5: Solve for x
   x = 2,170,602,019.67/50,821.50
6. Step 6: Final answer
   x = 42,710.31