Finding the Fourth Proportional to 149,766, 206,685.52 and 81,789.30

Step by Step Solution

1. Step 1: Write the proportion equation
   149,766 : 206,685.52 = 81,789.30 : x
2. Step 2: Convert to fraction form
   149,766/206,685.52 = 81,789.30/x
3. Step 3: Cross multiply
   149,766x = 206,685.52 × 81,789.30
4. Step 4: Simplify right side
   149,766x = 16,904,664,000.94
5. Step 5: Solve for x
   x = 16,904,664,000.94/149,766
6. Step 6: Final answer
   x = 112,873.84