Finding the Fourth Proportional to 122,401.98, 168,871.43 and 79,985.12

Step by Step Solution

1. Step 1: Write the proportion equation
   122,401.98 : 168,871.43 = 79,985.12 : x
2. Step 2: Convert to fraction form
   122,401.98/168,871.43 = 79,985.12/x
3. Step 3: Cross multiply
   122,401.98x = 168,871.43 × 79,985.12
4. Step 4: Simplify right side
   122,401.98x = 13,507,200,948.73
5. Step 5: Solve for x
   x = 13,507,200,948.73/122,401.98
6. Step 6: Final answer
   x = 110,351.16