Finding the Fourth Proportional to 89,139.24, 133,729.56 and 25,960.86

Step by Step Solution

1. Step 1: Write the proportion equation
   89,139.24 : 133,729.56 = 25,960.86 : x
2. Step 2: Convert to fraction form
   89,139.24/133,729.56 = 25,960.86/x
3. Step 3: Cross multiply
   89,139.24x = 133,729.56 × 25,960.86
4. Step 4: Simplify right side
   89,139.24x = 3,471,734,385.02
5. Step 5: Solve for x
   x = 3,471,734,385.02/89,139.24
6. Step 6: Final answer
   x = 38,947.32