Finding the Fourth Proportional to 105,786.33, 145,985.33 and 58,040.02

Step by Step Solution

1. Step 1: Write the proportion equation
   105,786.33 : 145,985.33 = 58,040.02 : x
2. Step 2: Convert to fraction form
   105,786.33/145,985.33 = 58,040.02/x
3. Step 3: Cross multiply
   105,786.33x = 145,985.33 × 58,040.02
4. Step 4: Simplify right side
   105,786.33x = 8,472,990,981.81
5. Step 5: Solve for x
   x = 8,472,990,981.81/105,786.33
6. Step 6: Final answer
   x = 80,095.33