Finding the Fourth Proportional to 142,824.31, 197,103.98 and 81,575.83

Step by Step Solution

1. Step 1: Write the proportion equation
   142,824.31 : 197,103.98 = 81,575.83 : x
2. Step 2: Convert to fraction form
   142,824.31/197,103.98 = 81,575.83/x
3. Step 3: Cross multiply
   142,824.31x = 197,103.98 × 81,575.83
4. Step 4: Simplify right side
   142,824.31x = 16,078,920,764.80
5. Step 5: Solve for x
   x = 16,078,920,764.80/142,824.31
6. Step 6: Final answer
   x = 112,578.32