Finding the Fourth Proportional to 50,081.51, 75,128.20 and 31,363.10

Step by Step Solution

1. Step 1: Write the proportion equation
   50,081.51 : 75,128.20 = 31,363.10 : x
2. Step 2: Convert to fraction form
   50,081.51/75,128.20 = 31,363.10/x
3. Step 3: Cross multiply
   50,081.51x = 75,128.20 × 31,363.10
4. Step 4: Simplify right side
   50,081.51x = 2,356,253,249.42
5. Step 5: Solve for x
   x = 2,356,253,249.42/50,081.51
6. Step 6: Final answer
   x = 47,048.37