Finding the Fourth Proportional to 78,856.38, 108,821.70 and 50,562

Step by Step Solution

1. Step 1: Write the proportion equation
   78,856.38 : 108,821.70 = 50,562 : x
2. Step 2: Convert to fraction form
   78,856.38/108,821.70 = 50,562/x
3. Step 3: Cross multiply
   78,856.38x = 108,821.70 × 50,562
4. Step 4: Simplify right side
   78,856.38x = 5,502,242,795.40
5. Step 5: Solve for x
   x = 5,502,242,795.40/78,856.38
6. Step 6: Final answer
   x = 69,775.49