Finding the Fourth Proportional to 109,638, 164,499.60 and 43,066.32

Step by Step Solution

1. Step 1: Write the proportion equation
   109,638 : 164,499.60 = 43,066.32 : x
2. Step 2: Convert to fraction form
   109,638/164,499.60 = 43,066.32/x
3. Step 3: Cross multiply
   109,638x = 164,499.60 × 43,066.32
4. Step 4: Simplify right side
   109,638x = 7,084,392,413.47
5. Step 5: Solve for x
   x = 7,084,392,413.47/109,638
6. Step 6: Final answer
   x = 64,616.21