Finding the Fourth Proportional to 105,233.14, 158,560.17 and 86,923.40

Step by Step Solution

1. Step 1: Write the proportion equation
   105,233.14 : 158,560.17 = 86,923.40 : x
2. Step 2: Convert to fraction form
   105,233.14/158,560.17 = 86,923.40/x
3. Step 3: Cross multiply
   105,233.14x = 158,560.17 × 86,923.40
4. Step 4: Simplify right side
   105,233.14x = 13,782,589,080.98
5. Step 5: Solve for x
   x = 13,782,589,080.98/105,233.14
6. Step 6: Final answer
   x = 130,971.95