Finding the Fourth Proportional to 30,861.16, 42,588.32 and 16,713.96

Step by Step Solution

1. Step 1: Write the proportion equation
   30,861.16 : 42,588.32 = 16,713.96 : x
2. Step 2: Convert to fraction form
   30,861.16/42,588.32 = 16,713.96/x
3. Step 3: Cross multiply
   30,861.16x = 42,588.32 × 16,713.96
4. Step 4: Simplify right side
   30,861.16x = 711,819,476.95
5. Step 5: Solve for x
   x = 711,819,476.95/30,861.16
6. Step 6: Final answer
   x = 23,065.22