Finding the Fourth Proportional to 142,009.86, 195,938.57 and 86,805.04

Step by Step Solution

1. Step 1: Write the proportion equation
   142,009.86 : 195,938.57 = 86,805.04 : x
2. Step 2: Convert to fraction form
   142,009.86/195,938.57 = 86,805.04/x
3. Step 3: Cross multiply
   142,009.86x = 195,938.57 × 86,805.04
4. Step 4: Simplify right side
   142,009.86x = 17,008,455,807.88
5. Step 5: Solve for x
   x = 17,008,455,807.88/142,009.86
6. Step 6: Final answer
   x = 119,769.54