Finding the Fourth Proportional to 149,843.99, 206,788.72 and 81,863.83

Step by Step Solution

1. Step 1: Write the proportion equation
   149,843.99 : 206,788.72 = 81,863.83 : x
2. Step 2: Convert to fraction form
   149,843.99/206,788.72 = 81,863.83/x
3. Step 3: Cross multiply
   149,843.99x = 206,788.72 × 81,863.83
4. Step 4: Simplify right side
   149,843.99x = 16,928,516,620.00
5. Step 5: Solve for x
   x = 16,928,516,620.00/149,843.99
6. Step 6: Final answer
   x = 112,974.28