Finding the Fourth Proportional to 105,355.98, 145,440.06 and 62,321.94

Step by Step Solution

1. Step 1: Write the proportion equation
   105,355.98 : 145,440.06 = 62,321.94 : x
2. Step 2: Convert to fraction form
   105,355.98/145,440.06 = 62,321.94/x
3. Step 3: Cross multiply
   105,355.98x = 145,440.06 × 62,321.94
4. Step 4: Simplify right side
   105,355.98x = 9,064,106,692.92
5. Step 5: Solve for x
   x = 9,064,106,692.92/105,355.98
6. Step 6: Final answer
   x = 86,033.15