Finding the Fourth Proportional to 149,878.50, 206,847.46 and 82,810.50

Step by Step Solution

1. Step 1: Write the proportion equation
   149,878.50 : 206,847.46 = 82,810.50 : x
2. Step 2: Convert to fraction form
   149,878.50/206,847.46 = 82,810.50/x
3. Step 3: Cross multiply
   149,878.50x = 206,847.46 × 82,810.50
4. Step 4: Simplify right side
   149,878.50x = 17,129,141,586.33
5. Step 5: Solve for x
   x = 17,129,141,586.33/149,878.50
6. Step 6: Final answer
   x = 114,286.85