Finding the Fourth Proportional to 142,360.16, 196,443.96 and 81,914.72

Step by Step Solution

1. Step 1: Write the proportion equation
   142,360.16 : 196,443.96 = 81,914.72 : x
2. Step 2: Convert to fraction form
   142,360.16/196,443.96 = 81,914.72/x
3. Step 3: Cross multiply
   142,360.16x = 196,443.96 × 81,914.72
4. Step 4: Simplify right side
   142,360.16x = 16,091,651,979.09
5. Step 5: Solve for x
   x = 16,091,651,979.09/142,360.16
6. Step 6: Final answer
   x = 113,034.80