Finding the Fourth Proportional to 42,698.88, 58,907.52 and 28,529.28

Step by Step Solution

1. Step 1: Write the proportion equation
   42,698.88 : 58,907.52 = 28,529.28 : x
2. Step 2: Convert to fraction form
   42,698.88/58,907.52 = 28,529.28/x
3. Step 3: Cross multiply
   42,698.88x = 58,907.52 × 28,529.28
4. Step 4: Simplify right side
   42,698.88x = 1,680,589,132.19
5. Step 5: Solve for x
   x = 1,680,589,132.19/42,698.88
6. Step 6: Final answer
   x = 39,359.09