Finding the Fourth Proportional to 142,823.31, 197,102.60 and 81,574.83

Step by Step Solution

1. Step 1: Write the proportion equation
   142,823.31 : 197,102.60 = 81,574.83 : x
2. Step 2: Convert to fraction form
   142,823.31/197,102.60 = 81,574.83/x
3. Step 3: Cross multiply
   142,823.31x = 197,102.60 × 81,574.83
4. Step 4: Simplify right side
   142,823.31x = 16,078,611,087.56
5. Step 5: Solve for x
   x = 16,078,611,087.56/142,823.31
6. Step 6: Final answer
   x = 112,576.94