Finding the Fourth Proportional to 142,326.56, 196,410.84 and 81,896

Step by Step Solution

1. Step 1: Write the proportion equation
   142,326.56 : 196,410.84 = 81,896 : x
2. Step 2: Convert to fraction form
   142,326.56/196,410.84 = 81,896/x
3. Step 3: Cross multiply
   142,326.56x = 196,410.84 × 81,896
4. Step 4: Simplify right side
   142,326.56x = 16,085,262,152.64
5. Step 5: Solve for x
   x = 16,085,262,152.64/142,326.56
6. Step 6: Final answer
   x = 113,016.59