Finding the Fourth Proportional to 229,460.72, 344,139.16 and 87,255.28

Step by Step Solution

1. Step 1: Write the proportion equation
   229,460.72 : 344,139.16 = 87,255.28 : x
2. Step 2: Convert to fraction form
   229,460.72/344,139.16 = 87,255.28/x
3. Step 3: Cross multiply
   229,460.72x = 344,139.16 × 87,255.28
4. Step 4: Simplify right side
   229,460.72x = 30,027,958,764.76
5. Step 5: Solve for x
   x = 30,027,958,764.76/229,460.72
6. Step 6: Final answer
   x = 130,863.18