Finding the Fourth Proportional to 30,919.30, 42,667.48 and 16,771.84

Step by Step Solution

1. Step 1: Write the proportion equation
   30,919.30 : 42,667.48 = 16,771.84 : x
2. Step 2: Convert to fraction form
   30,919.30/42,667.48 = 16,771.84/x
3. Step 3: Cross multiply
   30,919.30x = 42,667.48 × 16,771.84
4. Step 4: Simplify right side
   30,919.30x = 715,612,147.76
5. Step 5: Solve for x
   x = 715,612,147.76/30,919.30
6. Step 6: Final answer
   x = 23,144.51