Finding the Fourth Proportional to 42,643.12, 58,878.78 and 27,544.60

Step by Step Solution

1. Step 1: Write the proportion equation
   42,643.12 : 58,878.78 = 27,544.60 : x
2. Step 2: Convert to fraction form
   42,643.12/58,878.78 = 27,544.60/x
3. Step 3: Cross multiply
   42,643.12x = 58,878.78 × 27,544.60
4. Step 4: Simplify right side
   42,643.12x = 1,621,792,443.59
5. Step 5: Solve for x
   x = 1,621,792,443.59/42,643.12
6. Step 6: Final answer
   x = 38,031.75