Finding the Fourth Proportional to 30,724.56, 42,405.30 and 29,322.15

Step by Step Solution

1. Step 1: Write the proportion equation
   30,724.56 : 42,405.30 = 29,322.15 : x
2. Step 2: Convert to fraction form
   30,724.56/42,405.30 = 29,322.15/x
3. Step 3: Cross multiply
   30,724.56x = 42,405.30 × 29,322.15
4. Step 4: Simplify right side
   30,724.56x = 1,243,414,567.40
5. Step 5: Solve for x
   x = 1,243,414,567.40/30,724.56
6. Step 6: Final answer
   x = 40,469.73