Finding the Fourth Proportional to 30,782.50, 42,479.86 and 17,534.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,782.50 : 42,479.86 = 17,534.50 : x
2. Step 2: Convert to fraction form
   30,782.50/42,479.86 = 17,534.50/x
3. Step 3: Cross multiply
   30,782.50x = 42,479.86 × 17,534.50
4. Step 4: Simplify right side
   30,782.50x = 744,863,105.17
5. Step 5: Solve for x
   x = 744,863,105.17/30,782.50
6. Step 6: Final answer
   x = 24,197.62