Finding the Fourth Proportional to 78,871.68, 108,855.42 and 50,161.41

Step by Step Solution

1. Step 1: Write the proportion equation
   78,871.68 : 108,855.42 = 50,161.41 : x
2. Step 2: Convert to fraction form
   78,871.68/108,855.42 = 50,161.41/x
3. Step 3: Cross multiply
   78,871.68x = 108,855.42 × 50,161.41
4. Step 4: Simplify right side
   78,871.68x = 5,460,341,353.34
5. Step 5: Solve for x
   x = 5,460,341,353.34/78,871.68
6. Step 6: Final answer
   x = 69,230.70