Finding the Fourth Proportional to 201,871.59, 278,581.43 and 111,225.45

Step by Step Solution

1. Step 1: Write the proportion equation
   201,871.59 : 278,581.43 = 111,225.45 : x
2. Step 2: Convert to fraction form
   201,871.59/278,581.43 = 111,225.45/x
3. Step 3: Cross multiply
   201,871.59x = 278,581.43 × 111,225.45
4. Step 4: Simplify right side
   201,871.59x = 30,985,345,610.49
5. Step 5: Solve for x
   x = 30,985,345,610.49/201,871.59
6. Step 6: Final answer
   x = 153,490.37