Finding the Fourth Proportional to 117,960.69, 162,787.61 and 64,245.66

Step by Step Solution

1. Step 1: Write the proportion equation
   117,960.69 : 162,787.61 = 64,245.66 : x
2. Step 2: Convert to fraction form
   117,960.69/162,787.61 = 64,245.66/x
3. Step 3: Cross multiply
   117,960.69x = 162,787.61 × 64,245.66
4. Step 4: Simplify right side
   117,960.69x = 10,458,397,444.27
5. Step 5: Solve for x
   x = 10,458,397,444.27/117,960.69
6. Step 6: Final answer
   x = 88,660.02