Finding the Fourth Proportional to 42,759.83, 59,012.15 and 28,394.28

Step by Step Solution

1. Step 1: Write the proportion equation
   42,759.83 : 59,012.15 = 28,394.28 : x
2. Step 2: Convert to fraction form
   42,759.83/59,012.15 = 28,394.28/x
3. Step 3: Cross multiply
   42,759.83x = 59,012.15 × 28,394.28
4. Step 4: Simplify right side
   42,759.83x = 1,675,607,368.53
5. Step 5: Solve for x
   x = 1,675,607,368.53/42,759.83
6. Step 6: Final answer
   x = 39,186.48