Finding the Fourth Proportional to 105,768.86, 145,960.22 and 58,021.88

Step by Step Solution

1. Step 1: Write the proportion equation
   105,768.86 : 145,960.22 = 58,021.88 : x
2. Step 2: Convert to fraction form
   105,768.86/145,960.22 = 58,021.88/x
3. Step 3: Cross multiply
   105,768.86x = 145,960.22 × 58,021.88
4. Step 4: Simplify right side
   105,768.86x = 8,468,886,079.50
5. Step 5: Solve for x
   x = 8,468,886,079.50/105,768.86
6. Step 6: Final answer
   x = 80,069.75