Finding the Fourth Proportional to 143,617.56, 215,105.55 and 104,083.89

Step by Step Solution

1. Step 1: Write the proportion equation
   143,617.56 : 215,105.55 = 104,083.89 : x
2. Step 2: Convert to fraction form
   143,617.56/215,105.55 = 104,083.89/x
3. Step 3: Cross multiply
   143,617.56x = 215,105.55 × 104,083.89
4. Step 4: Simplify right side
   143,617.56x = 22,389,022,404.59
5. Step 5: Solve for x
   x = 22,389,022,404.59/143,617.56
6. Step 6: Final answer
   x = 155,893.35