Finding the Fourth Proportional to 103,391.01, 155,081.25 and 28,511.82

Step by Step Solution

1. Step 1: Write the proportion equation
   103,391.01 : 155,081.25 = 28,511.82 : x
2. Step 2: Convert to fraction form
   103,391.01/155,081.25 = 28,511.82/x
3. Step 3: Cross multiply
   103,391.01x = 155,081.25 × 28,511.82
4. Step 4: Simplify right side
   103,391.01x = 4,421,648,685.38
5. Step 5: Solve for x
   x = 4,421,648,685.38/103,391.01
6. Step 6: Final answer
   x = 42,766.28