Finding the Fourth Proportional to 50,890, 70,228.23 and 31,018

Step by Step Solution

1. Step 1: Write the proportion equation
   50,890 : 70,228.23 = 31,018 : x
2. Step 2: Convert to fraction form
   50,890/70,228.23 = 31,018/x
3. Step 3: Cross multiply
   50,890x = 70,228.23 × 31,018
4. Step 4: Simplify right side
   50,890x = 2,178,339,238.14
5. Step 5: Solve for x
   x = 2,178,339,238.14/50,890
6. Step 6: Final answer
   x = 42,804.86