Finding the Fourth Proportional to 296,771.60, 445,153.51 and 72,131.38

Step by Step Solution

1. Step 1: Write the proportion equation
   296,771.60 : 445,153.51 = 72,131.38 : x
2. Step 2: Convert to fraction form
   296,771.60/445,153.51 = 72,131.38/x
3. Step 3: Cross multiply
   296,771.60x = 445,153.51 × 72,131.38
4. Step 4: Simplify right side
   296,771.60x = 32,109,535,559.69
5. Step 5: Solve for x
   x = 32,109,535,559.69/296,771.60
6. Step 6: Final answer
   x = 108,196.12