Finding the Fourth Proportional to 30,749.55, 42,429.69 and 17,319.95

Step by Step Solution

1. Step 1: Write the proportion equation
   30,749.55 : 42,429.69 = 17,319.95 : x
2. Step 2: Convert to fraction form
   30,749.55/42,429.69 = 17,319.95/x
3. Step 3: Cross multiply
   30,749.55x = 42,429.69 × 17,319.95
4. Step 4: Simplify right side
   30,749.55x = 734,880,109.32
5. Step 5: Solve for x
   x = 734,880,109.32/30,749.55
6. Step 6: Final answer
   x = 23,898.89