Finding the Fourth Proportional to 103,617.69, 155,426.43 and 28,756.68

Step by Step Solution

1. Step 1: Write the proportion equation
   103,617.69 : 155,426.43 = 28,756.68 : x
2. Step 2: Convert to fraction form
   103,617.69/155,426.43 = 28,756.68/x
3. Step 3: Cross multiply
   103,617.69x = 155,426.43 × 28,756.68
4. Step 4: Simplify right side
   103,617.69x = 4,469,548,111.05
5. Step 5: Solve for x
   x = 4,469,548,111.05/103,617.69
6. Step 6: Final answer
   x = 43,134.99