Finding the Fourth Proportional to 30,880.56, 42,615 and 16,733.40

Step by Step Solution

1. Step 1: Write the proportion equation
   30,880.56 : 42,615 = 16,733.40 : x
2. Step 2: Convert to fraction form
   30,880.56/42,615 = 16,733.40/x
3. Step 3: Cross multiply
   30,880.56x = 42,615 × 16,733.40
4. Step 4: Simplify right side
   30,880.56x = 713,093,841.00
5. Step 5: Solve for x
   x = 713,093,841.00/30,880.56
6. Step 6: Final answer
   x = 23,092.00