Finding the Fourth Proportional to 81,401.30, 122,162.70 and 41,938.10

Step by Step Solution

1. Step 1: Write the proportion equation
   81,401.30 : 122,162.70 = 41,938.10 : x
2. Step 2: Convert to fraction form
   81,401.30/122,162.70 = 41,938.10/x
3. Step 3: Cross multiply
   81,401.30x = 122,162.70 × 41,938.10
4. Step 4: Simplify right side
   81,401.30x = 5,123,271,528.87
5. Step 5: Solve for x
   x = 5,123,271,528.87/81,401.30
6. Step 6: Final answer
   x = 62,938.45