Finding the Fourth Proportional to 115,559.72, 159,456.36 and 64,566.08

Step by Step Solution

1. Step 1: Write the proportion equation
   115,559.72 : 159,456.36 = 64,566.08 : x
2. Step 2: Convert to fraction form
   115,559.72/159,456.36 = 64,566.08/x
3. Step 3: Cross multiply
   115,559.72x = 159,456.36 × 64,566.08
4. Step 4: Simplify right side
   115,559.72x = 10,295,472,096.27
5. Step 5: Solve for x
   x = 10,295,472,096.27/115,559.72
6. Step 6: Final answer
   x = 89,092.22