Finding the Fourth Proportional to 72,889, 109,340.25 and 33,440.38

Step by Step Solution

1. Step 1: Write the proportion equation
   72,889 : 109,340.25 = 33,440.38 : x
2. Step 2: Convert to fraction form
   72,889/109,340.25 = 33,440.38/x
3. Step 3: Cross multiply
   72,889x = 109,340.25 × 33,440.38
4. Step 4: Simplify right side
   72,889x = 3,656,379,509.30
5. Step 5: Solve for x
   x = 3,656,379,509.30/72,889
6. Step 6: Final answer
   x = 50,163.67