Finding the Fourth Proportional to 105,066.88, 144,946.56 and 69,210.88

Step by Step Solution

1. Step 1: Write the proportion equation
   105,066.88 : 144,946.56 = 69,210.88 : x
2. Step 2: Convert to fraction form
   105,066.88/144,946.56 = 69,210.88/x
3. Step 3: Cross multiply
   105,066.88x = 144,946.56 × 69,210.88
4. Step 4: Simplify right side
   105,066.88x = 10,031,878,970.57
5. Step 5: Solve for x
   x = 10,031,878,970.57/105,066.88
6. Step 6: Final answer
   x = 95,480.89