Finding the Fourth Proportional to 142,091.10, 196,124.36 and 81,667.94

Step by Step Solution

1. Step 1: Write the proportion equation
   142,091.10 : 196,124.36 = 81,667.94 : x
2. Step 2: Convert to fraction form
   142,091.10/196,124.36 = 81,667.94/x
3. Step 3: Cross multiply
   142,091.10x = 196,124.36 × 81,667.94
4. Step 4: Simplify right side
   142,091.10x = 16,017,071,076.06
5. Step 5: Solve for x
   x = 16,017,071,076.06/142,091.10
6. Step 6: Final answer
   x = 112,723.96