Finding the Fourth Proportional to 42,250.80, 58,329.20 and 28,842.04

Step by Step Solution

1. Step 1: Write the proportion equation
   42,250.80 : 58,329.20 = 28,842.04 : x
2. Step 2: Convert to fraction form
   42,250.80/58,329.20 = 28,842.04/x
3. Step 3: Cross multiply
   42,250.80x = 58,329.20 × 28,842.04
4. Step 4: Simplify right side
   42,250.80x = 1,682,333,119.57
5. Step 5: Solve for x
   x = 1,682,333,119.57/42,250.80
6. Step 6: Final answer
   x = 39,817.78