Finding the Fourth Proportional to 142,377.89, 196,481.84 and 77,851.31

Step by Step Solution

1. Step 1: Write the proportion equation
   142,377.89 : 196,481.84 = 77,851.31 : x
2. Step 2: Convert to fraction form
   142,377.89/196,481.84 = 77,851.31/x
3. Step 3: Cross multiply
   142,377.89x = 196,481.84 × 77,851.31
4. Step 4: Simplify right side
   142,377.89x = 15,296,367,263.54
5. Step 5: Solve for x
   x = 15,296,367,263.54/142,377.89
6. Step 6: Final answer
   x = 107,434.99