Finding the Fourth Proportional to 50,807.12, 70,116.34 and 30,663.68

Step by Step Solution

1. Step 1: Write the proportion equation
   50,807.12 : 70,116.34 = 30,663.68 : x
2. Step 2: Convert to fraction form
   50,807.12/70,116.34 = 30,663.68/x
3. Step 3: Cross multiply
   50,807.12x = 70,116.34 × 30,663.68
4. Step 4: Simplify right side
   50,807.12x = 2,150,025,012.53
5. Step 5: Solve for x
   x = 2,150,025,012.53/50,807.12
6. Step 6: Final answer
   x = 42,317.40