Finding the Fourth Proportional to 42,230.39, 58,273.97 and 28,590.69

Step by Step Solution

1. Step 1: Write the proportion equation
   42,230.39 : 58,273.97 = 28,590.69 : x
2. Step 2: Convert to fraction form
   42,230.39/58,273.97 = 28,590.69/x
3. Step 3: Cross multiply
   42,230.39x = 58,273.97 × 28,590.69
4. Step 4: Simplify right side
   42,230.39x = 1,666,093,082.82
5. Step 5: Solve for x
   x = 1,666,093,082.82/42,230.39
6. Step 6: Final answer
   x = 39,452.47