Finding the Fourth Proportional to 50,142.35, 69,152.27 and 31,019.09

Step by Step Solution

1. Step 1: Write the proportion equation
   50,142.35 : 69,152.27 = 31,019.09 : x
2. Step 2: Convert to fraction form
   50,142.35/69,152.27 = 31,019.09/x
3. Step 3: Cross multiply
   50,142.35x = 69,152.27 × 31,019.09
4. Step 4: Simplify right side
   50,142.35x = 2,145,040,218.62
5. Step 5: Solve for x
   x = 2,145,040,218.62/50,142.35
6. Step 6: Final answer
   x = 42,779.01