Finding the Fourth Proportional to 115,662.72, 159,587.52 and 65,354.88

Step by Step Solution

1. Step 1: Write the proportion equation
   115,662.72 : 159,587.52 = 65,354.88 : x
2. Step 2: Convert to fraction form
   115,662.72/159,587.52 = 65,354.88/x
3. Step 3: Cross multiply
   115,662.72x = 159,587.52 × 65,354.88
4. Step 4: Simplify right side
   115,662.72x = 10,429,823,219.10
5. Step 5: Solve for x
   x = 10,429,823,219.10/115,662.72
6. Step 6: Final answer
   x = 90,174.46