Finding the Fourth Proportional to 142,166.09, 195,955.29 and 100,786.83

Step by Step Solution

1. Step 1: Write the proportion equation
   142,166.09 : 195,955.29 = 100,786.83 : x
2. Step 2: Convert to fraction form
   142,166.09/195,955.29 = 100,786.83/x
3. Step 3: Cross multiply
   142,166.09x = 195,955.29 × 100,786.83
4. Step 4: Simplify right side
   142,166.09x = 19,749,712,500.83
5. Step 5: Solve for x
   x = 19,749,712,500.83/142,166.09
6. Step 6: Final answer
   x = 138,920.00