Finding the Fourth Proportional to 142,009.39, 195,973.59 and 78,349.06

Step by Step Solution

1. Step 1: Write the proportion equation
   142,009.39 : 195,973.59 = 78,349.06 : x
2. Step 2: Convert to fraction form
   142,009.39/195,973.59 = 78,349.06/x
3. Step 3: Cross multiply
   142,009.39x = 195,973.59 × 78,349.06
4. Step 4: Simplify right side
   142,009.39x = 15,354,346,561.33
5. Step 5: Solve for x
   x = 15,354,346,561.33/142,009.39
6. Step 6: Final answer
   x = 108,122.05