Finding the Fourth Proportional to 117,844.38, 162,623.87 and 64,128.48

Step by Step Solution

1. Step 1: Write the proportion equation
   117,844.38 : 162,623.87 = 64,128.48 : x
2. Step 2: Convert to fraction form
   117,844.38/162,623.87 = 64,128.48/x
3. Step 3: Cross multiply
   117,844.38x = 162,623.87 × 64,128.48
4. Step 4: Simplify right side
   117,844.38x = 10,428,821,594.82
5. Step 5: Solve for x
   x = 10,428,821,594.82/117,844.38
6. Step 6: Final answer
   x = 88,496.55