Finding the Fourth Proportional to 72,329.80, 108,348.90 and 41,128.60

Step by Step Solution

1. Step 1: Write the proportion equation
   72,329.80 : 108,348.90 = 41,128.60 : x
2. Step 2: Convert to fraction form
   72,329.80/108,348.90 = 41,128.60/x
3. Step 3: Cross multiply
   72,329.80x = 108,348.90 × 41,128.60
4. Step 4: Simplify right side
   72,329.80x = 4,456,238,568.54
5. Step 5: Solve for x
   x = 4,456,238,568.54/72,329.80
6. Step 6: Final answer
   x = 61,609.99