Finding the Fourth Proportional to 316,910.78, 437,340.33 and 173,667.75

Step by Step Solution

1. Step 1: Write the proportion equation
   316,910.78 : 437,340.33 = 173,667.75 : x
2. Step 2: Convert to fraction form
   316,910.78/437,340.33 = 173,667.75/x
3. Step 3: Cross multiply
   316,910.78x = 437,340.33 × 173,667.75
4. Step 4: Simplify right side
   316,910.78x = 75,951,910,444.10
5. Step 5: Solve for x
   x = 75,951,910,444.10/316,910.78
6. Step 6: Final answer
   x = 239,663.38