Finding the Fourth Proportional to 50,187.12, 69,257.18 and 31,061.80

Step by Step Solution

1. Step 1: Write the proportion equation
   50,187.12 : 69,257.18 = 31,061.80 : x
2. Step 2: Convert to fraction form
   50,187.12/69,257.18 = 31,061.80/x
3. Step 3: Cross multiply
   50,187.12x = 69,257.18 × 31,061.80
4. Step 4: Simplify right side
   50,187.12x = 2,151,252,673.72
5. Step 5: Solve for x
   x = 2,151,252,673.72/50,187.12
6. Step 6: Final answer
   x = 42,864.64