Finding the Fourth Proportional to 72,647.78, 108,943.23 and 28,268.66

Step by Step Solution

1. Step 1: Write the proportion equation
   72,647.78 : 108,943.23 = 28,268.66 : x
2. Step 2: Convert to fraction form
   72,647.78/108,943.23 = 28,268.66/x
3. Step 3: Cross multiply
   72,647.78x = 108,943.23 × 28,268.66
4. Step 4: Simplify right side
   72,647.78x = 3,079,679,128.17
5. Step 5: Solve for x
   x = 3,079,679,128.17/72,647.78
6. Step 6: Final answer
   x = 42,391.92