Finding the Fourth Proportional to 117,806.67, 162,568.42 and 64,091.72

Step by Step Solution

1. Step 1: Write the proportion equation
   117,806.67 : 162,568.42 = 64,091.72 : x
2. Step 2: Convert to fraction form
   117,806.67/162,568.42 = 64,091.72/x
3. Step 3: Cross multiply
   117,806.67x = 162,568.42 × 64,091.72
4. Step 4: Simplify right side
   117,806.67x = 10,419,289,901.67
5. Step 5: Solve for x
   x = 10,419,289,901.67/117,806.67
6. Step 6: Final answer
   x = 88,443.97