Finding the Fourth Proportional to 117,916.50, 162,723.72 and 64,201.38

Step by Step Solution

1. Step 1: Write the proportion equation
   117,916.50 : 162,723.72 = 64,201.38 : x
2. Step 2: Convert to fraction form
   117,916.50/162,723.72 = 64,201.38/x
3. Step 3: Cross multiply
   117,916.50x = 162,723.72 × 64,201.38
4. Step 4: Simplify right side
   117,916.50x = 10,447,087,382.73
5. Step 5: Solve for x
   x = 10,447,087,382.73/117,916.50
6. Step 6: Final answer
   x = 88,597.33