Finding the Fourth Proportional to 50,840, 70,159.20 and 30,968

Step by Step Solution

1. Step 1: Write the proportion equation
   50,840 : 70,159.20 = 30,968 : x
2. Step 2: Convert to fraction form
   50,840/70,159.20 = 30,968/x
3. Step 3: Cross multiply
   50,840x = 70,159.20 × 30,968
4. Step 4: Simplify right side
   50,840x = 2,172,690,105.60
5. Step 5: Solve for x
   x = 2,172,690,105.60/50,840
6. Step 6: Final answer
   x = 42,735.84