Finding the Fourth Proportional to 64,719.38, 89,304.89 and 36,031.86

Step by Step Solution

1. Step 1: Write the proportion equation
   64,719.38 : 89,304.89 = 36,031.86 : x
2. Step 2: Convert to fraction form
   64,719.38/89,304.89 = 36,031.86/x
3. Step 3: Cross multiply
   64,719.38x = 89,304.89 × 36,031.86
4. Step 4: Simplify right side
   64,719.38x = 3,217,821,113.64
5. Step 5: Solve for x
   x = 3,217,821,113.64/64,719.38
6. Step 6: Final answer
   x = 49,719.59