Finding the Fourth Proportional to 297,094.06, 409,991.88 and 161,128.72

Step by Step Solution

1. Step 1: Write the proportion equation
   297,094.06 : 409,991.88 = 161,128.72 : x
2. Step 2: Convert to fraction form
   297,094.06/409,991.88 = 161,128.72/x
3. Step 3: Cross multiply
   297,094.06x = 409,991.88 × 161,128.72
4. Step 4: Simplify right side
   297,094.06x = 66,061,466,834.79
5. Step 5: Solve for x
   x = 66,061,466,834.79/297,094.06
6. Step 6: Final answer
   x = 222,358.76