Finding the Fourth Proportional to 321,056.76, 443,061.59 and 193,707.75

Step by Step Solution

1. Step 1: Write the proportion equation
   321,056.76 : 443,061.59 = 193,707.75 : x
2. Step 2: Convert to fraction form
   321,056.76/443,061.59 = 193,707.75/x
3. Step 3: Cross multiply
   321,056.76x = 443,061.59 × 193,707.75
4. Step 4: Simplify right side
   321,056.76x = 85,824,462,741.78
5. Step 5: Solve for x
   x = 85,824,462,741.78/321,056.76
6. Step 6: Final answer
   x = 267,318.66