Finding the Fourth Proportional to 30,810.30, 42,518.68 and 17,381.82

Step by Step Solution

1. Step 1: Write the proportion equation
   30,810.30 : 42,518.68 = 17,381.82 : x
2. Step 2: Convert to fraction form
   30,810.30/42,518.68 = 17,381.82/x
3. Step 3: Cross multiply
   30,810.30x = 42,518.68 × 17,381.82
4. Step 4: Simplify right side
   30,810.30x = 739,052,042.40
5. Step 5: Solve for x
   x = 739,052,042.40/30,810.30
6. Step 6: Final answer
   x = 23,987.17