Finding the Fourth Proportional to 50,141.31, 75,161.34 and 31,434.50

Step by Step Solution

1. Step 1: Write the proportion equation
   50,141.31 : 75,161.34 = 31,434.50 : x
2. Step 2: Convert to fraction form
   50,141.31/75,161.34 = 31,434.50/x
3. Step 3: Cross multiply
   50,141.31x = 75,161.34 × 31,434.50
4. Step 4: Simplify right side
   50,141.31x = 2,362,658,766.42
5. Step 5: Solve for x
   x = 2,362,658,766.42/50,141.31
6. Step 6: Final answer
   x = 47,120.00