Finding the Fourth Proportional to 69,993.54, 105,034.05 and 28,440.54

Step by Step Solution

1. Step 1: Write the proportion equation
   69,993.54 : 105,034.05 = 28,440.54 : x
2. Step 2: Convert to fraction form
   69,993.54/105,034.05 = 28,440.54/x
3. Step 3: Cross multiply
   69,993.54x = 105,034.05 × 28,440.54
4. Step 4: Simplify right side
   69,993.54x = 2,987,225,100.39
5. Step 5: Solve for x
   x = 2,987,225,100.39/69,993.54
6. Step 6: Final answer
   x = 42,678.58