Finding the Fourth Proportional to 81,198.87, 112,056.45 and 45,394.83

Step by Step Solution

1. Step 1: Write the proportion equation
   81,198.87 : 112,056.45 = 45,394.83 : x
2. Step 2: Convert to fraction form
   81,198.87/112,056.45 = 45,394.83/x
3. Step 3: Cross multiply
   81,198.87x = 112,056.45 × 45,394.83
4. Step 4: Simplify right side
   81,198.87x = 5,086,783,498.15
5. Step 5: Solve for x
   x = 5,086,783,498.15/81,198.87
6. Step 6: Final answer
   x = 62,645.99