Finding the Fourth Proportional to 117,964.86, 162,790.67 and 64,249.71

Step by Step Solution

1. Step 1: Write the proportion equation
   117,964.86 : 162,790.67 = 64,249.71 : x
2. Step 2: Convert to fraction form
   117,964.86/162,790.67 = 64,249.71/x
3. Step 3: Cross multiply
   117,964.86x = 162,790.67 × 64,249.71
4. Step 4: Simplify right side
   117,964.86x = 10,459,253,016.96
5. Step 5: Solve for x
   x = 10,459,253,016.96/117,964.86
6. Step 6: Final answer
   x = 88,664.14