Finding the Fourth Proportional to 42,996.86, 59,355.69 and 28,680.52

Step by Step Solution

1. Step 1: Write the proportion equation
   42,996.86 : 59,355.69 = 28,680.52 : x
2. Step 2: Convert to fraction form
   42,996.86/59,355.69 = 28,680.52/x
3. Step 3: Cross multiply
   42,996.86x = 59,355.69 × 28,680.52
4. Step 4: Simplify right side
   42,996.86x = 1,702,351,757.38
5. Step 5: Solve for x
   x = 1,702,351,757.38/42,996.86
6. Step 6: Final answer
   x = 39,592.47