Finding the Fourth Proportional to 111,072.89, 153,218.27 and 68,073.21

Step by Step Solution

1. Step 1: Write the proportion equation
   111,072.89 : 153,218.27 = 68,073.21 : x
2. Step 2: Convert to fraction form
   111,072.89/153,218.27 = 68,073.21/x
3. Step 3: Cross multiply
   111,072.89x = 153,218.27 × 68,073.21
4. Step 4: Simplify right side
   111,072.89x = 10,430,059,469.55
5. Step 5: Solve for x
   x = 10,430,059,469.55/111,072.89
6. Step 6: Final answer
   x = 93,902.84