Finding the Fourth Proportional to 42,109.15, 58,120.40 and 27,771.57

Step by Step Solution

1. Step 1: Write the proportion equation
   42,109.15 : 58,120.40 = 27,771.57 : x
2. Step 2: Convert to fraction form
   42,109.15/58,120.40 = 27,771.57/x
3. Step 3: Cross multiply
   42,109.15x = 58,120.40 × 27,771.57
4. Step 4: Simplify right side
   42,109.15x = 1,614,094,757.03
5. Step 5: Solve for x
   x = 1,614,094,757.03/42,109.15
6. Step 6: Final answer
   x = 38,331.21