Finding the Fourth Proportional to 105,005.12, 144,870.72 and 67,300.16

Step by Step Solution

1. Step 1: Write the proportion equation
   105,005.12 : 144,870.72 = 67,300.16 : x
2. Step 2: Convert to fraction form
   105,005.12/144,870.72 = 67,300.16/x
3. Step 3: Cross multiply
   105,005.12x = 144,870.72 × 67,300.16
4. Step 4: Simplify right side
   105,005.12x = 9,749,822,635.32
5. Step 5: Solve for x
   x = 9,749,822,635.32/105,005.12
6. Step 6: Final answer
   x = 92,850.93