Finding the Fourth Proportional to 144,667.79, 199,609.25 and 87,316.41

Step by Step Solution

1. Step 1: Write the proportion equation
   144,667.79 : 199,609.25 = 87,316.41 : x
2. Step 2: Convert to fraction form
   144,667.79/199,609.25 = 87,316.41/x
3. Step 3: Cross multiply
   144,667.79x = 199,609.25 × 87,316.41
4. Step 4: Simplify right side
   144,667.79x = 17,429,162,676.21
5. Step 5: Solve for x
   x = 17,429,162,676.21/144,667.79
6. Step 6: Final answer
   x = 120,477.15