Finding the Fourth Proportional to 64,144.72, 88,462.20 and 53,425.18

Step by Step Solution

1. Step 1: Write the proportion equation
   64,144.72 : 88,462.20 = 53,425.18 : x
2. Step 2: Convert to fraction form
   64,144.72/88,462.20 = 53,425.18/x
3. Step 3: Cross multiply
   64,144.72x = 88,462.20 × 53,425.18
4. Step 4: Simplify right side
   64,144.72x = 4,726,108,958.20
5. Step 5: Solve for x
   x = 4,726,108,958.20/64,144.72
6. Step 6: Final answer
   x = 73,678.85