Finding the Fourth Proportional to 30,810.29, 42,518.67 and 17,381.81

Step by Step Solution

1. Step 1: Write the proportion equation
   30,810.29 : 42,518.67 = 17,381.81 : x
2. Step 2: Convert to fraction form
   30,810.29/42,518.67 = 17,381.81/x
3. Step 3: Cross multiply
   30,810.29x = 42,518.67 × 17,381.81
4. Step 4: Simplify right side
   30,810.29x = 739,051,443.39
5. Step 5: Solve for x
   x = 739,051,443.39/30,810.29
6. Step 6: Final answer
   x = 23,987.16