Finding the Fourth Proportional to 31,549.04, 43,449.08 and 30,860.12

Step by Step Solution

1. Step 1: Write the proportion equation
   31,549.04 : 43,449.08 = 30,860.12 : x
2. Step 2: Convert to fraction form
   31,549.04/43,449.08 = 30,860.12/x
3. Step 3: Cross multiply
   31,549.04x = 43,449.08 × 30,860.12
4. Step 4: Simplify right side
   31,549.04x = 1,340,843,822.69
5. Step 5: Solve for x
   x = 1,340,843,822.69/31,549.04
6. Step 6: Final answer
   x = 42,500.31