Finding the Fourth Proportional to 117,947.61, 162,763.29 and 64,231.38

Step by Step Solution

1. Step 1: Write the proportion equation
   117,947.61 : 162,763.29 = 64,231.38 : x
2. Step 2: Convert to fraction form
   117,947.61/162,763.29 = 64,231.38/x
3. Step 3: Cross multiply
   117,947.61x = 162,763.29 × 64,231.38
4. Step 4: Simplify right side
   117,947.61x = 10,454,510,730.04
5. Step 5: Solve for x
   x = 10,454,510,730.04/117,947.61
6. Step 6: Final answer
   x = 88,636.90