Finding the Fourth Proportional to 42,016.74, 63,039.69 and 18,659.58

Step by Step Solution

1. Step 1: Write the proportion equation
   42,016.74 : 63,039.69 = 18,659.58 : x
2. Step 2: Convert to fraction form
   42,016.74/63,039.69 = 18,659.58/x
3. Step 3: Cross multiply
   42,016.74x = 63,039.69 × 18,659.58
4. Step 4: Simplify right side
   42,016.74x = 1,176,294,138.73
5. Step 5: Solve for x
   x = 1,176,294,138.73/42,016.74
6. Step 6: Final answer
   x = 27,995.84