Finding the Fourth Proportional to 143,601.42, 215,081.37 and 104,067.75

Step by Step Solution

1. Step 1: Write the proportion equation
   143,601.42 : 215,081.37 = 104,067.75 : x
2. Step 2: Convert to fraction form
   143,601.42/215,081.37 = 104,067.75/x
3. Step 3: Cross multiply
   143,601.42x = 215,081.37 × 104,067.75
4. Step 4: Simplify right side
   143,601.42x = 22,383,034,242.82
5. Step 5: Solve for x
   x = 22,383,034,242.82/143,601.42
6. Step 6: Final answer
   x = 155,869.17