Finding the Fourth Proportional to 72,540.69, 108,841.79 and 35,128.63

Step by Step Solution

1. Step 1: Write the proportion equation
   72,540.69 : 108,841.79 = 35,128.63 : x
2. Step 2: Convert to fraction form
   72,540.69/108,841.79 = 35,128.63/x
3. Step 3: Cross multiply
   72,540.69x = 108,841.79 × 35,128.63
4. Step 4: Simplify right side
   72,540.69x = 3,823,463,065.91
5. Step 5: Solve for x
   x = 3,823,463,065.91/72,540.69
6. Step 6: Final answer
   x = 52,707.84