Finding the Fourth Proportional to 353,885.82, 488,357.55 and 202,979.58

Step by Step Solution

1. Step 1: Write the proportion equation
   353,885.82 : 488,357.55 = 202,979.58 : x
2. Step 2: Convert to fraction form
   353,885.82/488,357.55 = 202,979.58/x
3. Step 3: Cross multiply
   353,885.82x = 488,357.55 × 202,979.58
4. Step 4: Simplify right side
   353,885.82x = 99,126,610,388.83
5. Step 5: Solve for x
   x = 99,126,610,388.83/353,885.82
6. Step 6: Final answer
   x = 280,109.02