Finding the Fourth Proportional to 42,069.45, 58,025.37 and 28,616.83

Step by Step Solution

1. Step 1: Write the proportion equation
   42,069.45 : 58,025.37 = 28,616.83 : x
2. Step 2: Convert to fraction form
   42,069.45/58,025.37 = 28,616.83/x
3. Step 3: Cross multiply
   42,069.45x = 58,025.37 × 28,616.83
4. Step 4: Simplify right side
   42,069.45x = 1,660,502,148.98
5. Step 5: Solve for x
   x = 1,660,502,148.98/42,069.45
6. Step 6: Final answer
   x = 39,470.50