Finding the Fourth Proportional to 31,149.77, 42,979.61 and 30,082.73

Step by Step Solution

1. Step 1: Write the proportion equation
   31,149.77 : 42,979.61 = 30,082.73 : x
2. Step 2: Convert to fraction form
   31,149.77/42,979.61 = 30,082.73/x
3. Step 3: Cross multiply
   31,149.77x = 42,979.61 × 30,082.73
4. Step 4: Simplify right side
   31,149.77x = 1,292,943,863.44
5. Step 5: Solve for x
   x = 1,292,943,863.44/31,149.77
6. Step 6: Final answer
   x = 41,507.34