Finding the Fourth Proportional to 107,404.88, 161,066.81 and 86,293.04

Step by Step Solution

1. Step 1: Write the proportion equation
   107,404.88 : 161,066.81 = 86,293.04 : x
2. Step 2: Convert to fraction form
   107,404.88/161,066.81 = 86,293.04/x
3. Step 3: Cross multiply
   107,404.88x = 161,066.81 × 86,293.04
4. Step 4: Simplify right side
   107,404.88x = 13,898,944,088.40
5. Step 5: Solve for x
   x = 13,898,944,088.40/107,404.88
6. Step 6: Final answer
   x = 129,407.01