Finding the Fourth Proportional to 109,915, 164,761.72 and 43,329.36

Step by Step Solution

1. Step 1: Write the proportion equation
   109,915 : 164,761.72 = 43,329.36 : x
2. Step 2: Convert to fraction form
   109,915/164,761.72 = 43,329.36/x
3. Step 3: Cross multiply
   109,915x = 164,761.72 × 43,329.36
4. Step 4: Simplify right side
   109,915x = 7,139,019,880.10
5. Step 5: Solve for x
   x = 7,139,019,880.10/109,915
6. Step 6: Final answer
   x = 64,950.37