Finding the Fourth Proportional to 89,070.78, 122,912.52 and 48,785.31

Step by Step Solution

1. Step 1: Write the proportion equation
   89,070.78 : 122,912.52 = 48,785.31 : x
2. Step 2: Convert to fraction form
   89,070.78/122,912.52 = 48,785.31/x
3. Step 3: Cross multiply
   89,070.78x = 122,912.52 × 48,785.31
4. Step 4: Simplify right side
   89,070.78x = 5,996,325,391.08
5. Step 5: Solve for x
   x = 5,996,325,391.08/89,070.78
6. Step 6: Final answer
   x = 67,320.90