Finding the Fourth Proportional to 108,961.32, 163,436.22 and 64,007.40

Step by Step Solution

1. Step 1: Write the proportion equation
   108,961.32 : 163,436.22 = 64,007.40 : x
2. Step 2: Convert to fraction form
   108,961.32/163,436.22 = 64,007.40/x
3. Step 3: Cross multiply
   108,961.32x = 163,436.22 × 64,007.40
4. Step 4: Simplify right side
   108,961.32x = 10,461,127,508.03
5. Step 5: Solve for x
   x = 10,461,127,508.03/108,961.32
6. Step 6: Final answer
   x = 96,007.72