Finding the Fourth Proportional to 115,682.38, 159,640.56 and 64,694.53

Step by Step Solution

1. Step 1: Write the proportion equation
   115,682.38 : 159,640.56 = 64,694.53 : x
2. Step 2: Convert to fraction form
   115,682.38/159,640.56 = 64,694.53/x
3. Step 3: Cross multiply
   115,682.38x = 159,640.56 × 64,694.53
4. Step 4: Simplify right side
   115,682.38x = 10,327,870,998.14
5. Step 5: Solve for x
   x = 10,327,870,998.14/115,682.38
6. Step 6: Final answer
   x = 89,277.82