Finding the Fourth Proportional to 223,820.72, 308,873.76 and 123,218.72

Step by Step Solution

1. Step 1: Write the proportion equation
   223,820.72 : 308,873.76 = 123,218.72 : x
2. Step 2: Convert to fraction form
   223,820.72/308,873.76 = 123,218.72/x
3. Step 3: Cross multiply
   223,820.72x = 308,873.76 × 123,218.72
4. Step 4: Simplify right side
   223,820.72x = 38,059,029,348.79
5. Step 5: Solve for x
   x = 38,059,029,348.79/223,820.72
6. Step 6: Final answer
   x = 170,042.48