Finding the Fourth Proportional to 42,168.73, 58,240.67 and 28,716.62

Step by Step Solution

1. Step 1: Write the proportion equation
   42,168.73 : 58,240.67 = 28,716.62 : x
2. Step 2: Convert to fraction form
   42,168.73/58,240.67 = 28,716.62/x
3. Step 3: Cross multiply
   42,168.73x = 58,240.67 × 28,716.62
4. Step 4: Simplify right side
   42,168.73x = 1,672,475,188.94
5. Step 5: Solve for x
   x = 1,672,475,188.94/42,168.73
6. Step 6: Final answer
   x = 39,661.50