Finding the Fourth Proportional to 105,016.59, 144,934.13 and 64,204.66

Step by Step Solution

1. Step 1: Write the proportion equation
   105,016.59 : 144,934.13 = 64,204.66 : x
2. Step 2: Convert to fraction form
   105,016.59/144,934.13 = 64,204.66/x
3. Step 3: Cross multiply
   105,016.59x = 144,934.13 × 64,204.66
4. Step 4: Simplify right side
   105,016.59x = 9,305,447,061.97
5. Step 5: Solve for x
   x = 9,305,447,061.97/105,016.59
6. Step 6: Final answer
   x = 88,609.31