Finding the Fourth Proportional to 103,254.72, 154,853.71 and 28,357.09

Step by Step Solution

1. Step 1: Write the proportion equation
   103,254.72 : 154,853.71 = 28,357.09 : x
2. Step 2: Convert to fraction form
   103,254.72/154,853.71 = 28,357.09/x
3. Step 3: Cross multiply
   103,254.72x = 154,853.71 × 28,357.09
4. Step 4: Simplify right side
   103,254.72x = 4,391,200,133.28
5. Step 5: Solve for x
   x = 4,391,200,133.28/103,254.72
6. Step 6: Final answer
   x = 42,527.84