Finding the Fourth Proportional to 149,642.06, 206,541.50 and 86,016.83

Step by Step Solution

1. Step 1: Write the proportion equation
   149,642.06 : 206,541.50 = 86,016.83 : x
2. Step 2: Convert to fraction form
   149,642.06/206,541.50 = 86,016.83/x
3. Step 3: Cross multiply
   149,642.06x = 206,541.50 × 86,016.83
4. Step 4: Simplify right side
   149,642.06x = 17,766,043,630.65
5. Step 5: Solve for x
   x = 17,766,043,630.65/149,642.06
6. Step 6: Final answer
   x = 118,723.60