Finding the Fourth Proportional to 42,358.52, 58,465.40 and 28,769.58

Step by Step Solution

1. Step 1: Write the proportion equation
   42,358.52 : 58,465.40 = 28,769.58 : x
2. Step 2: Convert to fraction form
   42,358.52/58,465.40 = 28,769.58/x
3. Step 3: Cross multiply
   42,358.52x = 58,465.40 × 28,769.58
4. Step 4: Simplify right side
   42,358.52x = 1,682,025,002.53
5. Step 5: Solve for x
   x = 1,682,025,002.53/42,358.52
6. Step 6: Final answer
   x = 39,709.25