Finding the Fourth Proportional to 89,112.72, 122,949.18 and 50,871

Step by Step Solution

1. Step 1: Write the proportion equation
   89,112.72 : 122,949.18 = 50,871 : x
2. Step 2: Convert to fraction form
   89,112.72/122,949.18 = 50,871/x
3. Step 3: Cross multiply
   89,112.72x = 122,949.18 × 50,871
4. Step 4: Simplify right side
   89,112.72x = 6,254,547,735.78
5. Step 5: Solve for x
   x = 6,254,547,735.78/89,112.72
6. Step 6: Final answer
   x = 70,186.92