Finding the Fourth Proportional to 189,404.72, 261,380.03 and 103,364.38

Step by Step Solution

1. Step 1: Write the proportion equation
   189,404.72 : 261,380.03 = 103,364.38 : x
2. Step 2: Convert to fraction form
   189,404.72/261,380.03 = 103,364.38/x
3. Step 3: Cross multiply
   189,404.72x = 261,380.03 × 103,364.38
4. Step 4: Simplify right side
   189,404.72x = 27,017,384,745.33
5. Step 5: Solve for x
   x = 27,017,384,745.33/189,404.72
6. Step 6: Final answer
   x = 142,643.67