Finding the Fourth Proportional to 321,066.91, 443,075.59 and 193,717.90

Step by Step Solution

1. Step 1: Write the proportion equation
   321,066.91 : 443,075.59 = 193,717.90 : x
2. Step 2: Convert to fraction form
   321,066.91/443,075.59 = 193,717.90/x
3. Step 3: Cross multiply
   321,066.91x = 443,075.59 × 193,717.90
4. Step 4: Simplify right side
   321,066.91x = 85,831,673,632.05
5. Step 5: Solve for x
   x = 85,831,673,632.05/321,066.91
6. Step 6: Final answer
   x = 267,332.67