Finding the Fourth Proportional to 201,443.80, 302,399.10 and 108,131.80

Step by Step Solution

1. Step 1: Write the proportion equation
   201,443.80 : 302,399.10 = 108,131.80 : x
2. Step 2: Convert to fraction form
   201,443.80/302,399.10 = 108,131.80/x
3. Step 3: Cross multiply
   201,443.80x = 302,399.10 × 108,131.80
4. Step 4: Simplify right side
   201,443.80x = 32,698,959,001.38
5. Step 5: Solve for x
   x = 32,698,959,001.38/201,443.80
6. Step 6: Final answer
   x = 162,322.99