Finding the Fourth Proportional to 141,411, 212,105.40 and 82,208.88

Step by Step Solution

1. Step 1: Write the proportion equation
   141,411 : 212,105.40 = 82,208.88 : x
2. Step 2: Convert to fraction form
   141,411/212,105.40 = 82,208.88/x
3. Step 3: Cross multiply
   141,411x = 212,105.40 × 82,208.88
4. Step 4: Simplify right side
   141,411x = 17,436,947,375.95
5. Step 5: Solve for x
   x = 17,436,947,375.95/141,411
6. Step 6: Final answer
   x = 123,306.87