Finding the Fourth Proportional to 115,704.64, 159,668.04 and 65,404.72

Step by Step Solution

1. Step 1: Write the proportion equation
   115,704.64 : 159,668.04 = 65,404.72 : x
2. Step 2: Convert to fraction form
   115,704.64/159,668.04 = 65,404.72/x
3. Step 3: Cross multiply
   115,704.64x = 159,668.04 × 65,404.72
4. Step 4: Simplify right side
   115,704.64x = 10,443,043,449.15
5. Step 5: Solve for x
   x = 10,443,043,449.15/115,704.64
6. Step 6: Final answer
   x = 90,256.05