Finding the Fourth Proportional to 30,861.19, 42,591.91 and 17,433.31

Step by Step Solution

1. Step 1: Write the proportion equation
   30,861.19 : 42,591.91 = 17,433.31 : x
2. Step 2: Convert to fraction form
   30,861.19/42,591.91 = 17,433.31/x
3. Step 3: Cross multiply
   30,861.19x = 42,591.91 × 17,433.31
4. Step 4: Simplify right side
   30,861.19x = 742,517,926.94
5. Step 5: Solve for x
   x = 742,517,926.94/30,861.19
6. Step 6: Final answer
   x = 24,059.93