Finding the Fourth Proportional to 243,870.27, 336,554.04 and 136,433.89

Step by Step Solution

1. Step 1: Write the proportion equation
   243,870.27 : 336,554.04 = 136,433.89 : x
2. Step 2: Convert to fraction form
   243,870.27/336,554.04 = 136,433.89/x
3. Step 3: Cross multiply
   243,870.27x = 336,554.04 × 136,433.89
4. Step 4: Simplify right side
   243,870.27x = 45,917,376,872.42
5. Step 5: Solve for x
   x = 45,917,376,872.42/243,870.27
6. Step 6: Final answer
   x = 188,286.08