Finding the Fourth Proportional to 321,100.73, 443,133.60 and 177,860.76

Step by Step Solution

1. Step 1: Write the proportion equation
   321,100.73 : 443,133.60 = 177,860.76 : x
2. Step 2: Convert to fraction form
   321,100.73/443,133.60 = 177,860.76/x
3. Step 3: Cross multiply
   321,100.73x = 443,133.60 × 177,860.76
4. Step 4: Simplify right side
   321,100.73x = 78,816,075,772.56
5. Step 5: Solve for x
   x = 78,816,075,772.56/321,100.73
6. Step 6: Final answer
   x = 245,455.92