Finding the Fourth Proportional to 219,711.69, 329,483.23 and 105,839.60

Step by Step Solution

1. Step 1: Write the proportion equation
   219,711.69 : 329,483.23 = 105,839.60 : x
2. Step 2: Convert to fraction form
   219,711.69/329,483.23 = 105,839.60/x
3. Step 3: Cross multiply
   219,711.69x = 329,483.23 × 105,839.60
4. Step 4: Simplify right side
   219,711.69x = 34,872,371,357.89
5. Step 5: Solve for x
   x = 34,872,371,357.89/219,711.69
6. Step 6: Final answer
   x = 158,718.78