Finding the Fourth Proportional to 89,793.05, 134,690.25 and 39,859.72

Step by Step Solution

1. Step 1: Write the proportion equation
   89,793.05 : 134,690.25 = 39,859.72 : x
2. Step 2: Convert to fraction form
   89,793.05/134,690.25 = 39,859.72/x
3. Step 3: Cross multiply
   89,793.05x = 134,690.25 × 39,859.72
4. Step 4: Simplify right side
   89,793.05x = 5,368,715,651.73
5. Step 5: Solve for x
   x = 5,368,715,651.73/89,793.05
6. Step 6: Final answer
   x = 59,789.88