Finding the Fourth Proportional to 30,709.10, 42,375.12 and 17,280.07

Step by Step Solution

1. Step 1: Write the proportion equation
   30,709.10 : 42,375.12 = 17,280.07 : x
2. Step 2: Convert to fraction form
   30,709.10/42,375.12 = 17,280.07/x
3. Step 3: Cross multiply
   30,709.10x = 42,375.12 × 17,280.07
4. Step 4: Simplify right side
   30,709.10x = 732,244,827.98
5. Step 5: Solve for x
   x = 732,244,827.98/30,709.10
6. Step 6: Final answer
   x = 23,844.56