Finding the Fourth Proportional to 115,746.05, 159,728.69 and 65,446.85

Step by Step Solution

1. Step 1: Write the proportion equation
   115,746.05 : 159,728.69 = 65,446.85 : x
2. Step 2: Convert to fraction form
   115,746.05/159,728.69 = 65,446.85/x
3. Step 3: Cross multiply
   115,746.05x = 159,728.69 × 65,446.85
4. Step 4: Simplify right side
   115,746.05x = 10,453,739,287.89
5. Step 5: Solve for x
   x = 10,453,739,287.89/115,746.05
6. Step 6: Final answer
   x = 90,316.16