Finding the Fourth Proportional to 213,337.82, 320,181.69 and 108,186.86

Step by Step Solution

1. Step 1: Write the proportion equation
   213,337.82 : 320,181.69 = 108,186.86 : x
2. Step 2: Convert to fraction form
   213,337.82/320,181.69 = 108,186.86/x
3. Step 3: Cross multiply
   213,337.82x = 320,181.69 × 108,186.86
4. Step 4: Simplify right side
   213,337.82x = 34,639,451,670.59
5. Step 5: Solve for x
   x = 34,639,451,670.59/213,337.82
6. Step 6: Final answer
   x = 162,369.01