Finding the Fourth Proportional to 42,499.57, 58,661.76 and 28,352.38

Step by Step Solution

1. Step 1: Write the proportion equation
   42,499.57 : 58,661.76 = 28,352.38 : x
2. Step 2: Convert to fraction form
   42,499.57/58,661.76 = 28,352.38/x
3. Step 3: Cross multiply
   42,499.57x = 58,661.76 × 28,352.38
4. Step 4: Simplify right side
   42,499.57x = 1,663,200,510.99
5. Step 5: Solve for x
   x = 1,663,200,510.99/42,499.57
6. Step 6: Final answer
   x = 39,134.53