Finding the Fourth Proportional to 393,498.39, 590,181.55 and 109,217.82

Step by Step Solution

1. Step 1: Write the proportion equation
   393,498.39 : 590,181.55 = 109,217.82 : x
2. Step 2: Convert to fraction form
   393,498.39/590,181.55 = 109,217.82/x
3. Step 3: Cross multiply
   393,498.39x = 590,181.55 × 109,217.82
4. Step 4: Simplify right side
   393,498.39x = 64,458,339,344.31
5. Step 5: Solve for x
   x = 64,458,339,344.31/393,498.39
6. Step 6: Final answer
   x = 163,808.40