Finding the Fourth Proportional to 30,678.21, 42,334.83 and 17,250.24

Step by Step Solution

1. Step 1: Write the proportion equation
   30,678.21 : 42,334.83 = 17,250.24 : x
2. Step 2: Convert to fraction form
   30,678.21/42,334.83 = 17,250.24/x
3. Step 3: Cross multiply
   30,678.21x = 42,334.83 × 17,250.24
4. Step 4: Simplify right side
   30,678.21x = 730,285,977.86
5. Step 5: Solve for x
   x = 730,285,977.86/30,678.21
6. Step 6: Final answer
   x = 23,804.71