Finding the Fourth Proportional to 117,861.92, 162,647.76 and 64,869.92

Step by Step Solution

1. Step 1: Write the proportion equation
   117,861.92 : 162,647.76 = 64,869.92 : x
2. Step 2: Convert to fraction form
   117,861.92/162,647.76 = 64,869.92/x
3. Step 3: Cross multiply
   117,861.92x = 162,647.76 × 64,869.92
4. Step 4: Simplify right side
   117,861.92x = 10,550,947,179.38
5. Step 5: Solve for x
   x = 10,550,947,179.38/117,861.92
6. Step 6: Final answer
   x = 89,519.56