Finding the Fourth Proportional to 70,523.99, 105,786.38 and 28,423.43

Step by Step Solution

1. Step 1: Write the proportion equation
   70,523.99 : 105,786.38 = 28,423.43 : x
2. Step 2: Convert to fraction form
   70,523.99/105,786.38 = 28,423.43/x
3. Step 3: Cross multiply
   70,523.99x = 105,786.38 × 28,423.43
4. Step 4: Simplify right side
   70,523.99x = 3,006,811,309.01
5. Step 5: Solve for x
   x = 3,006,811,309.01/70,523.99
6. Step 6: Final answer
   x = 42,635.30