Finding the Fourth Proportional to 30,861.12, 42,576.61 and 22,814.10

Step by Step Solution

1. Step 1: Write the proportion equation
   30,861.12 : 42,576.61 = 22,814.10 : x
2. Step 2: Convert to fraction form
   30,861.12/42,576.61 = 22,814.10/x
3. Step 3: Cross multiply
   30,861.12x = 42,576.61 × 22,814.10
4. Step 4: Simplify right side
   30,861.12x = 971,346,981.17
5. Step 5: Solve for x
   x = 971,346,981.17/30,861.12
6. Step 6: Final answer
   x = 31,474.78