Finding the Fourth Proportional to 354,111.51, 531,222.48 and 143,764.23

Step by Step Solution

1. Step 1: Write the proportion equation
   354,111.51 : 531,222.48 = 143,764.23 : x
2. Step 2: Convert to fraction form
   354,111.51/531,222.48 = 143,764.23/x
3. Step 3: Cross multiply
   354,111.51x = 531,222.48 × 143,764.23
4. Step 4: Simplify right side
   354,111.51x = 76,370,790,795.89
5. Step 5: Solve for x
   x = 76,370,790,795.89/354,111.51
6. Step 6: Final answer
   x = 215,668.76