Finding the Fourth Proportional to 42,821.01, 59,113.71 and 28,504.71

Step by Step Solution

1. Step 1: Write the proportion equation
   42,821.01 : 59,113.71 = 28,504.71 : x
2. Step 2: Convert to fraction form
   42,821.01/59,113.71 = 28,504.71/x
3. Step 3: Cross multiply
   42,821.01x = 59,113.71 × 28,504.71
4. Step 4: Simplify right side
   42,821.01x = 1,685,019,160.57
5. Step 5: Solve for x
   x = 1,685,019,160.57/42,821.01
6. Step 6: Final answer
   x = 39,350.29