Finding the Fourth Proportional to 311,393.69, 429,724.61 and 175,429.26

Step by Step Solution

1. Step 1: Write the proportion equation
   311,393.69 : 429,724.61 = 175,429.26 : x
2. Step 2: Convert to fraction form
   311,393.69/429,724.61 = 175,429.26/x
3. Step 3: Cross multiply
   311,393.69x = 429,724.61 × 175,429.26
4. Step 4: Simplify right side
   311,393.69x = 75,386,269,458.94
5. Step 5: Solve for x
   x = 75,386,269,458.94/311,393.69
6. Step 6: Final answer
   x = 242,093.12