Finding the Fourth Proportional to 42,221.81, 58,243.06 and 27,116.78

Step by Step Solution

1. Step 1: Write the proportion equation
   42,221.81 : 58,243.06 = 27,116.78 : x
2. Step 2: Convert to fraction form
   42,221.81/58,243.06 = 27,116.78/x
3. Step 3: Cross multiply
   42,221.81x = 58,243.06 × 27,116.78
4. Step 4: Simplify right side
   42,221.81x = 1,579,363,987.23
5. Step 5: Solve for x
   x = 1,579,363,987.23/42,221.81
6. Step 6: Final answer
   x = 37,406.35