Finding the Fourth Proportional to 50,003.80, 74,919.30 and 42,227.80

Step by Step Solution

1. Step 1: Write the proportion equation
   50,003.80 : 74,919.30 = 42,227.80 : x
2. Step 2: Convert to fraction form
   50,003.80/74,919.30 = 42,227.80/x
3. Step 3: Cross multiply
   50,003.80x = 74,919.30 × 42,227.80
4. Step 4: Simplify right side
   50,003.80x = 3,163,677,216.54
5. Step 5: Solve for x
   x = 3,163,677,216.54/50,003.80
6. Step 6: Final answer
   x = 63,268.74