Finding the Fourth Proportional to 70,544.28, 105,815.25 and 28,423.33

Step by Step Solution

1. Step 1: Write the proportion equation
   70,544.28 : 105,815.25 = 28,423.33 : x
2. Step 2: Convert to fraction form
   70,544.28/105,815.25 = 28,423.33/x
3. Step 3: Cross multiply
   70,544.28x = 105,815.25 × 28,423.33
4. Step 4: Simplify right side
   70,544.28x = 3,007,621,769.78
5. Step 5: Solve for x
   x = 3,007,621,769.78/70,544.28
6. Step 6: Final answer
   x = 42,634.52