Finding the Fourth Proportional to 117,960.47, 162,787.32 and 64,245.45

Step by Step Solution

1. Step 1: Write the proportion equation
   117,960.47 : 162,787.32 = 64,245.45 : x
2. Step 2: Convert to fraction form
   117,960.47/162,787.32 = 64,245.45/x
3. Step 3: Cross multiply
   117,960.47x = 162,787.32 × 64,245.45
4. Step 4: Simplify right side
   117,960.47x = 10,458,345,238.15
5. Step 5: Solve for x
   x = 10,458,345,238.15/117,960.47
6. Step 6: Final answer
   x = 88,659.75