Finding the Fourth Proportional to 104,667.11, 144,439.25 and 56,919.42

Step by Step Solution

1. Step 1: Write the proportion equation
   104,667.11 : 144,439.25 = 56,919.42 : x
2. Step 2: Convert to fraction form
   104,667.11/144,439.25 = 56,919.42/x
3. Step 3: Cross multiply
   104,667.11x = 144,439.25 × 56,919.42
4. Step 4: Simplify right side
   104,667.11x = 8,221,398,050.64
5. Step 5: Solve for x
   x = 8,221,398,050.64/104,667.11
6. Step 6: Final answer
   x = 78,548.06