Finding the Fourth Proportional to 103,429.56, 155,141.25 and 28,554.27

Step by Step Solution

1. Step 1: Write the proportion equation
   103,429.56 : 155,141.25 = 28,554.27 : x
2. Step 2: Convert to fraction form
   103,429.56/155,141.25 = 28,554.27/x
3. Step 3: Cross multiply
   103,429.56x = 155,141.25 × 28,554.27
4. Step 4: Simplify right side
   103,429.56x = 4,429,945,528.49
5. Step 5: Solve for x
   x = 4,429,945,528.49/103,429.56
6. Step 6: Final answer
   x = 42,830.56