Finding the Fourth Proportional to 30,973.61, 42,743.34 and 16,826.55

Step by Step Solution

1. Step 1: Write the proportion equation
   30,973.61 : 42,743.34 = 16,826.55 : x
2. Step 2: Convert to fraction form
   30,973.61/42,743.34 = 16,826.55/x
3. Step 3: Cross multiply
   30,973.61x = 42,743.34 × 16,826.55
4. Step 4: Simplify right side
   30,973.61x = 719,222,947.68
5. Step 5: Solve for x
   x = 719,222,947.68/30,973.61
6. Step 6: Final answer
   x = 23,220.51