Finding the Fourth Proportional to 105,100.32, 145,042.79 and 59,786.28

Step by Step Solution

1. Step 1: Write the proportion equation
   105,100.32 : 145,042.79 = 59,786.28 : x
2. Step 2: Convert to fraction form
   105,100.32/145,042.79 = 59,786.28/x
3. Step 3: Cross multiply
   105,100.32x = 145,042.79 × 59,786.28
4. Step 4: Simplify right side
   105,100.32x = 8,671,568,854.92
5. Step 5: Solve for x
   x = 8,671,568,854.92/105,100.32
6. Step 6: Final answer
   x = 82,507.54