Finding the Fourth Proportional to 30,661.83, 42,303.81 and 17,905.81

Step by Step Solution

1. Step 1: Write the proportion equation
   30,661.83 : 42,303.81 = 17,905.81 : x
2. Step 2: Convert to fraction form
   30,661.83/42,303.81 = 17,905.81/x
3. Step 3: Cross multiply
   30,661.83x = 42,303.81 × 17,905.81
4. Step 4: Simplify right side
   30,661.83x = 757,483,984.14
5. Step 5: Solve for x
   x = 757,483,984.14/30,661.83
6. Step 6: Final answer
   x = 24,704.46