Finding the Fourth Proportional to 297,085.98, 409,978.84 and 161,119.88

Step by Step Solution

1. Step 1: Write the proportion equation
   297,085.98 : 409,978.84 = 161,119.88 : x
2. Step 2: Convert to fraction form
   297,085.98/409,978.84 = 161,119.88/x
3. Step 3: Cross multiply
   297,085.98x = 409,978.84 × 161,119.88
4. Step 4: Simplify right side
   297,085.98x = 66,055,741,503.34
5. Step 5: Solve for x
   x = 66,055,741,503.34/297,085.98
6. Step 6: Final answer
   x = 222,345.54