Finding the Fourth Proportional to 103,567.82, 155,355.17 and 28,688.72

Step by Step Solution

1. Step 1: Write the proportion equation
   103,567.82 : 155,355.17 = 28,688.72 : x
2. Step 2: Convert to fraction form
   103,567.82/155,355.17 = 28,688.72/x
3. Step 3: Cross multiply
   103,567.82x = 155,355.17 × 28,688.72
4. Step 4: Simplify right side
   103,567.82x = 4,456,940,052.46
5. Step 5: Solve for x
   x = 4,456,940,052.46/103,567.82
6. Step 6: Final answer
   x = 43,034.03