Finding the Fourth Proportional to 42,236.28, 58,309.20 and 28,827.54

Step by Step Solution

1. Step 1: Write the proportion equation
   42,236.28 : 58,309.20 = 28,827.54 : x
2. Step 2: Convert to fraction form
   42,236.28/58,309.20 = 28,827.54/x
3. Step 3: Cross multiply
   42,236.28x = 58,309.20 × 28,827.54
4. Step 4: Simplify right side
   42,236.28x = 1,680,910,795.37
5. Step 5: Solve for x
   x = 1,680,910,795.37/42,236.28
6. Step 6: Final answer
   x = 39,797.79