Finding the Fourth Proportional to 42,846.27, 64,284.81 and 19,151.84

Step by Step Solution

1. Step 1: Write the proportion equation
   42,846.27 : 64,284.81 = 19,151.84 : x
2. Step 2: Convert to fraction form
   42,846.27/64,284.81 = 19,151.84/x
3. Step 3: Cross multiply
   42,846.27x = 64,284.81 × 19,151.84
4. Step 4: Simplify right side
   42,846.27x = 1,231,172,484.44
5. Step 5: Solve for x
   x = 1,231,172,484.44/42,846.27
6. Step 6: Final answer
   x = 28,734.65