Finding the Fourth Proportional to 89,072.56, 122,920.19 and 48,786.31

Step by Step Solution

1. Step 1: Write the proportion equation
   89,072.56 : 122,920.19 = 48,786.31 : x
2. Step 2: Convert to fraction form
   89,072.56/122,920.19 = 48,786.31/x
3. Step 3: Cross multiply
   89,072.56x = 122,920.19 × 48,786.31
4. Step 4: Simplify right side
   89,072.56x = 5,996,822,494.60
5. Step 5: Solve for x
   x = 5,996,822,494.60/89,072.56
6. Step 6: Final answer
   x = 67,325.14