Finding the Fourth Proportional to 608,399.82, 911,956.18 and 229,156.47

Step by Step Solution

1. Step 1: Write the proportion equation
   608,399.82 : 911,956.18 = 229,156.47 : x
2. Step 2: Convert to fraction form
   608,399.82/911,956.18 = 229,156.47/x
3. Step 3: Cross multiply
   608,399.82x = 911,956.18 × 229,156.47
4. Step 4: Simplify right side
   608,399.82x = 208,980,659,003.49
5. Step 5: Solve for x
   x = 208,980,659,003.49/608,399.82
6. Step 6: Final answer
   x = 343,492.31