Finding the Fourth Proportional to 117,636, 162,337.68 and 64,644

Step by Step Solution

1. Step 1: Write the proportion equation
   117,636 : 162,337.68 = 64,644 : x
2. Step 2: Convert to fraction form
   117,636/162,337.68 = 64,644/x
3. Step 3: Cross multiply
   117,636x = 162,337.68 × 64,644
4. Step 4: Simplify right side
   117,636x = 10,494,156,985.92
5. Step 5: Solve for x
   x = 10,494,156,985.92/117,636
6. Step 6: Final answer
   x = 89,208.72