Finding the Fourth Proportional to 89,358.20, 123,310.61 and 48,520.73

Step by Step Solution

1. Step 1: Write the proportion equation
   89,358.20 : 123,310.61 = 48,520.73 : x
2. Step 2: Convert to fraction form
   89,358.20/123,310.61 = 48,520.73/x
3. Step 3: Cross multiply
   89,358.20x = 123,310.61 × 48,520.73
4. Step 4: Simplify right side
   89,358.20x = 5,983,119,954.79
5. Step 5: Solve for x
   x = 5,983,119,954.79/89,358.20
6. Step 6: Final answer
   x = 66,956.59