Finding the Fourth Proportional to 581,100.78, 871,151.89 and 201,972.28

Step by Step Solution

1. Step 1: Write the proportion equation
   581,100.78 : 871,151.89 = 201,972.28 : x
2. Step 2: Convert to fraction form
   581,100.78/871,151.89 = 201,972.28/x
3. Step 3: Cross multiply
   581,100.78x = 871,151.89 × 201,972.28
4. Step 4: Simplify right side
   581,100.78x = 175,948,529,093.85
5. Step 5: Solve for x
   x = 175,948,529,093.85/581,100.78
6. Step 6: Final answer
   x = 302,784.88