Finding the Fourth Proportional to 129,783.10, 179,036.31 and 83,826.94

Step by Step Solution

1. Step 1: Write the proportion equation
   129,783.10 : 179,036.31 = 83,826.94 : x
2. Step 2: Convert to fraction form
   129,783.10/179,036.31 = 83,826.94/x
3. Step 3: Cross multiply
   129,783.10x = 179,036.31 × 83,826.94
4. Step 4: Simplify right side
   129,783.10x = 15,008,066,016.19
5. Step 5: Solve for x
   x = 15,008,066,016.19/129,783.10
6. Step 6: Final answer
   x = 115,639.60