Finding the Fourth Proportional to 117,600, 162,288 and 64,608

Step by Step Solution

1. Step 1: Write the proportion equation
   117,600 : 162,288 = 64,608 : x
2. Step 2: Convert to fraction form
   117,600/162,288 = 64,608/x
3. Step 3: Cross multiply
   117,600x = 162,288 × 64,608
4. Step 4: Simplify right side
   117,600x = 10,485,103,104
5. Step 5: Solve for x
   x = 10,485,103,104/117,600
6. Step 6: Final answer
   x = 89,159.04