Finding the Fourth Proportional to 105,168, 144,981.12 and 64,854.71

Step by Step Solution

1. Step 1: Write the proportion equation
   105,168 : 144,981.12 = 64,854.71 : x
2. Step 2: Convert to fraction form
   105,168/144,981.12 = 64,854.71/x
3. Step 3: Cross multiply
   105,168x = 144,981.12 × 64,854.71
4. Step 4: Simplify right side
   105,168x = 9,402,707,768.17
5. Step 5: Solve for x
   x = 9,402,707,768.17/105,168
6. Step 6: Final answer
   x = 89,406.55