Finding the Fourth Proportional to 30,659.01, 42,308.12 and 17,912.90

Step by Step Solution

1. Step 1: Write the proportion equation
   30,659.01 : 42,308.12 = 17,912.90 : x
2. Step 2: Convert to fraction form
   30,659.01/42,308.12 = 17,912.90/x
3. Step 3: Cross multiply
   30,659.01x = 42,308.12 × 17,912.90
4. Step 4: Simplify right side
   30,659.01x = 757,861,035.32
5. Step 5: Solve for x
   x = 757,861,035.32/30,659.01
6. Step 6: Final answer
   x = 24,719.03