Finding the Fourth Proportional to 30,719.50, 42,392.91 and 17,290.83

Step by Step Solution

1. Step 1: Write the proportion equation
   30,719.50 : 42,392.91 = 17,290.83 : x
2. Step 2: Convert to fraction form
   30,719.50/42,392.91 = 17,290.83/x
3. Step 3: Cross multiply
   30,719.50x = 42,392.91 × 17,290.83
4. Step 4: Simplify right side
   30,719.50x = 733,008,535.17
5. Step 5: Solve for x
   x = 733,008,535.17/30,719.50
6. Step 6: Final answer
   x = 23,861.34