Finding the Fourth Proportional to 117,853.92, 162,636.72 and 64,861.92

Step by Step Solution

1. Step 1: Write the proportion equation
   117,853.92 : 162,636.72 = 64,861.92 : x
2. Step 2: Convert to fraction form
   117,853.92/162,636.72 = 64,861.92/x
3. Step 3: Cross multiply
   117,853.92x = 162,636.72 × 64,861.92
4. Step 4: Simplify right side
   117,853.92x = 10,548,929,921.70
5. Step 5: Solve for x
   x = 10,548,929,921.70/117,853.92
6. Step 6: Final answer
   x = 89,508.52