Finding the Fourth Proportional to 42,786.16, 64,181.22 and 30,361.84

Step by Step Solution

1. Step 1: Write the proportion equation
   42,786.16 : 64,181.22 = 30,361.84 : x
2. Step 2: Convert to fraction form
   42,786.16/64,181.22 = 30,361.84/x
3. Step 3: Cross multiply
   42,786.16x = 64,181.22 × 30,361.84
4. Step 4: Simplify right side
   42,786.16x = 1,948,659,932.64
5. Step 5: Solve for x
   x = 1,948,659,932.64/42,786.16
6. Step 6: Final answer
   x = 45,544.17