Finding the Fourth Proportional to 149,499.54, 206,308.53 and 82,431.54

Step by Step Solution

1. Step 1: Write the proportion equation
   149,499.54 : 206,308.53 = 82,431.54 : x
2. Step 2: Convert to fraction form
   149,499.54/206,308.53 = 82,431.54/x
3. Step 3: Cross multiply
   149,499.54x = 206,308.53 × 82,431.54
4. Step 4: Simplify right side
   149,499.54x = 17,006,329,843.04
5. Step 5: Solve for x
   x = 17,006,329,843.04/149,499.54
6. Step 6: Final answer
   x = 113,755.06