Finding the Fourth Proportional to 142,350.47, 196,444.83 and 78,689.33

Step by Step Solution

1. Step 1: Write the proportion equation
   142,350.47 : 196,444.83 = 78,689.33 : x
2. Step 2: Convert to fraction form
   142,350.47/196,444.83 = 78,689.33/x
3. Step 3: Cross multiply
   142,350.47x = 196,444.83 × 78,689.33
4. Step 4: Simplify right side
   142,350.47x = 15,458,112,054.66
5. Step 5: Solve for x
   x = 15,458,112,054.66/142,350.47
6. Step 6: Final answer
   x = 108,591.93