Finding the Fourth Proportional to 105,112.09, 145,057.86 and 59,796.57

Step by Step Solution

1. Step 1: Write the proportion equation
   105,112.09 : 145,057.86 = 59,796.57 : x
2. Step 2: Convert to fraction form
   105,112.09/145,057.86 = 59,796.57/x
3. Step 3: Cross multiply
   105,112.09x = 145,057.86 × 59,796.57
4. Step 4: Simplify right side
   105,112.09x = 8,673,962,479.54
5. Step 5: Solve for x
   x = 8,673,962,479.54/105,112.09
6. Step 6: Final answer
   x = 82,521.07