Finding the Fourth Proportional to 103,435.73, 155,150.51 and 28,560.45

Step by Step Solution

1. Step 1: Write the proportion equation
   103,435.73 : 155,150.51 = 28,560.45 : x
2. Step 2: Convert to fraction form
   103,435.73/155,150.51 = 28,560.45/x
3. Step 3: Cross multiply
   103,435.73x = 155,150.51 × 28,560.45
4. Step 4: Simplify right side
   103,435.73x = 4,431,168,383.33
5. Step 5: Solve for x
   x = 4,431,168,383.33/103,435.73
6. Step 6: Final answer
   x = 42,839.82