Finding the Fourth Proportional to 311,401.81, 429,645.61 and 175,388.23

Step by Step Solution

1. Step 1: Write the proportion equation
   311,401.81 : 429,645.61 = 175,388.23 : x
2. Step 2: Convert to fraction form
   311,401.81/429,645.61 = 175,388.23/x
3. Step 3: Cross multiply
   311,401.81x = 429,645.61 × 175,388.23
4. Step 4: Simplify right side
   311,401.81x = 75,354,783,065.17
5. Step 5: Solve for x
   x = 75,354,783,065.17/311,401.81
6. Step 6: Final answer
   x = 241,985.69