Finding the Fourth Proportional to 288,994.02, 398,891.98 and 168,158.72

Step by Step Solution

1. Step 1: Write the proportion equation
   288,994.02 : 398,891.98 = 168,158.72 : x
2. Step 2: Convert to fraction form
   288,994.02/398,891.98 = 168,158.72/x
3. Step 3: Cross multiply
   288,994.02x = 398,891.98 × 168,158.72
4. Step 4: Simplify right side
   288,994.02x = 67,077,164,775.07
5. Step 5: Solve for x
   x = 67,077,164,775.07/288,994.02
6. Step 6: Final answer
   x = 232,105.72