Finding the Fourth Proportional to 144,749.43, 199,758.15 and 81,085.86

Step by Step Solution

1. Step 1: Write the proportion equation
   144,749.43 : 199,758.15 = 81,085.86 : x
2. Step 2: Convert to fraction form
   144,749.43/199,758.15 = 81,085.86/x
3. Step 3: Cross multiply
   144,749.43x = 199,758.15 × 81,085.86
4. Step 4: Simplify right side
   144,749.43x = 16,197,561,384.76
5. Step 5: Solve for x
   x = 16,197,561,384.76/144,749.43
6. Step 6: Final answer
   x = 111,900.69