Finding the Fourth Proportional to 107,814.10, 161,721.15 and 105,510.10

Step by Step Solution

1. Step 1: Write the proportion equation
   107,814.10 : 161,721.15 = 105,510.10 : x
2. Step 2: Convert to fraction form
   107,814.10/161,721.15 = 105,510.10/x
3. Step 3: Cross multiply
   107,814.10x = 161,721.15 × 105,510.10
4. Step 4: Simplify right side
   107,814.10x = 17,063,214,708.62
5. Step 5: Solve for x
   x = 17,063,214,708.62/107,814.10
6. Step 6: Final answer
   x = 158,265.15