Finding the Fourth Proportional to 356,870.34, 492,574.77 and 213,742.26

Step by Step Solution

1. Step 1: Write the proportion equation
   356,870.34 : 492,574.77 = 213,742.26 : x
2. Step 2: Convert to fraction form
   356,870.34/492,574.77 = 213,742.26/x
3. Step 3: Cross multiply
   356,870.34x = 492,574.77 × 213,742.26
4. Step 4: Simplify right side
   356,870.34x = 105,284,044,558.78
5. Step 5: Solve for x
   x = 105,284,044,558.78/356,870.34
6. Step 6: Final answer
   x = 295,020.44