Finding the Fourth Proportional to 83,401.84, 125,115.54 and 28,010.80

Step by Step Solution

1. Step 1: Write the proportion equation
   83,401.84 : 125,115.54 = 28,010.80 : x
2. Step 2: Convert to fraction form
   83,401.84/125,115.54 = 28,010.80/x
3. Step 3: Cross multiply
   83,401.84x = 125,115.54 × 28,010.80
4. Step 4: Simplify right side
   83,401.84x = 3,504,586,367.83
5. Step 5: Solve for x
   x = 3,504,586,367.83/83,401.84
6. Step 6: Final answer
   x = 42,020.49