Finding the Fourth Proportional to 30,781.07, 42,478.37 and 17,352.98

Step by Step Solution

1. Step 1: Write the proportion equation
   30,781.07 : 42,478.37 = 17,352.98 : x
2. Step 2: Convert to fraction form
   30,781.07/42,478.37 = 17,352.98/x
3. Step 3: Cross multiply
   30,781.07x = 42,478.37 × 17,352.98
4. Step 4: Simplify right side
   30,781.07x = 737,126,005.89
5. Step 5: Solve for x
   x = 737,126,005.89/30,781.07
6. Step 6: Final answer
   x = 23,947.38