Finding the Fourth Proportional to 316,667.12, 437,005.56 and 173,424.56

Step by Step Solution

1. Step 1: Write the proportion equation
   316,667.12 : 437,005.56 = 173,424.56 : x
2. Step 2: Convert to fraction form
   316,667.12/437,005.56 = 173,424.56/x
3. Step 3: Cross multiply
   316,667.12x = 437,005.56 × 173,424.56
4. Step 4: Simplify right side
   316,667.12x = 75,787,496,960.55
5. Step 5: Solve for x
   x = 75,787,496,960.55/316,667.12
6. Step 6: Final answer
   x = 239,328.60