Finding the Fourth Proportional to 143,018.50, 197,374.96 and 82,591.68

Step by Step Solution

1. Step 1: Write the proportion equation
   143,018.50 : 197,374.96 = 82,591.68 : x
2. Step 2: Convert to fraction form
   143,018.50/197,374.96 = 82,591.68/x
3. Step 3: Cross multiply
   143,018.50x = 197,374.96 × 82,591.68
4. Step 4: Simplify right side
   143,018.50x = 16,301,529,536.33
5. Step 5: Solve for x
   x = 16,301,529,536.33/143,018.50
6. Step 6: Final answer
   x = 113,981.96