Finding the Fourth Proportional to 31,150.56, 42,986.42 and 17,719.92

Step by Step Solution

1. Step 1: Write the proportion equation
   31,150.56 : 42,986.42 = 17,719.92 : x
2. Step 2: Convert to fraction form
   31,150.56/42,986.42 = 17,719.92/x
3. Step 3: Cross multiply
   31,150.56x = 42,986.42 × 17,719.92
4. Step 4: Simplify right side
   31,150.56x = 761,715,923.49
5. Step 5: Solve for x
   x = 761,715,923.49/31,150.56
6. Step 6: Final answer
   x = 24,452.72