Finding the Fourth Proportional to 30,921.15, 42,671.27 and 16,774.00

Step by Step Solution

1. Step 1: Write the proportion equation
   30,921.15 : 42,671.27 = 16,774.00 : x
2. Step 2: Convert to fraction form
   30,921.15/42,671.27 = 16,774.00/x
3. Step 3: Cross multiply
   30,921.15x = 42,671.27 × 16,774.00
4. Step 4: Simplify right side
   30,921.15x = 715,767,849.69
5. Step 5: Solve for x
   x = 715,767,849.69/30,921.15
6. Step 6: Final answer
   x = 23,148.16