Finding the Fourth Proportional to 42,760.85, 58,995.50 and 27,672.57

Step by Step Solution

1. Step 1: Write the proportion equation
   42,760.85 : 58,995.50 = 27,672.57 : x
2. Step 2: Convert to fraction form
   42,760.85/58,995.50 = 27,672.57/x
3. Step 3: Cross multiply
   42,760.85x = 58,995.50 × 27,672.57
4. Step 4: Simplify right side
   42,760.85x = 1,632,556,965.07
5. Step 5: Solve for x
   x = 1,632,556,965.07/42,760.85
6. Step 6: Final answer
   x = 38,178.78