Finding the Fourth Proportional to 99,826.19, 137,579.71 and 82,740.45

Step by Step Solution

1. Step 1: Write the proportion equation
   99,826.19 : 137,579.71 = 82,740.45 : x
2. Step 2: Convert to fraction form
   99,826.19/137,579.71 = 82,740.45/x
3. Step 3: Cross multiply
   99,826.19x = 137,579.71 × 82,740.45
4. Step 4: Simplify right side
   99,826.19x = 11,383,407,116.27
5. Step 5: Solve for x
   x = 11,383,407,116.27/99,826.19
6. Step 6: Final answer
   x = 114,032.27