Finding the Fourth Proportional to 142,587.32, 196,722.30 and 82,156.40

Step by Step Solution

1. Step 1: Write the proportion equation
   142,587.32 : 196,722.30 = 82,156.40 : x
2. Step 2: Convert to fraction form
   142,587.32/196,722.30 = 82,156.40/x
3. Step 3: Cross multiply
   142,587.32x = 196,722.30 × 82,156.40
4. Step 4: Simplify right side
   142,587.32x = 16,161,995,967.72
5. Step 5: Solve for x
   x = 16,161,995,967.72/142,587.32
6. Step 6: Final answer
   x = 113,348.06