Finding the Fourth Proportional to 142,823.39, 197,102.72 and 81,574.92

Step by Step Solution

1. Step 1: Write the proportion equation
   142,823.39 : 197,102.72 = 81,574.92 : x
2. Step 2: Convert to fraction form
   142,823.39/197,102.72 = 81,574.92/x
3. Step 3: Cross multiply
   142,823.39x = 197,102.72 × 81,574.92
4. Step 4: Simplify right side
   142,823.39x = 16,078,638,819.72
5. Step 5: Solve for x
   x = 16,078,638,819.72/142,823.39
6. Step 6: Final answer
   x = 112,577.07