Finding the Fourth Proportional to 105,785.83, 145,984.45 and 60,464.79

Step by Step Solution

1. Step 1: Write the proportion equation
   105,785.83 : 145,984.45 = 60,464.79 : x
2. Step 2: Convert to fraction form
   105,785.83/145,984.45 = 60,464.79/x
3. Step 3: Cross multiply
   105,785.83x = 145,984.45 × 60,464.79
4. Step 4: Simplify right side
   105,785.83x = 8,826,919,112.52
5. Step 5: Solve for x
   x = 8,826,919,112.52/105,785.83
6. Step 6: Final answer
   x = 83,441.41