Finding the Fourth Proportional to 50,151.88, 69,185.10 and 42,191.20

Step by Step Solution

1. Step 1: Write the proportion equation
   50,151.88 : 69,185.10 = 42,191.20 : x
2. Step 2: Convert to fraction form
   50,151.88/69,185.10 = 42,191.20/x
3. Step 3: Cross multiply
   50,151.88x = 69,185.10 × 42,191.20
4. Step 4: Simplify right side
   50,151.88x = 2,919,002,391.12
5. Step 5: Solve for x
   x = 2,919,002,391.12/50,151.88
6. Step 6: Final answer
   x = 58,203.25