Finding the Fourth Proportional to 50,105.90, 69,157.52 and 31,239.38

Step by Step Solution

1. Step 1: Write the proportion equation
   50,105.90 : 69,157.52 = 31,239.38 : x
2. Step 2: Convert to fraction form
   50,105.90/69,157.52 = 31,239.38/x
3. Step 3: Cross multiply
   50,105.90x = 69,157.52 × 31,239.38
4. Step 4: Simplify right side
   50,105.90x = 2,160,437,545.15
5. Step 5: Solve for x
   x = 2,160,437,545.15/50,105.90
6. Step 6: Final answer
   x = 43,117.43