Finding the Fourth Proportional to 142,047.39, 196,018.74 and 81,575.40

Step by Step Solution

1. Step 1: Write the proportion equation
   142,047.39 : 196,018.74 = 81,575.40 : x
2. Step 2: Convert to fraction form
   142,047.39/196,018.74 = 81,575.40/x
3. Step 3: Cross multiply
   142,047.39x = 196,018.74 × 81,575.40
4. Step 4: Simplify right side
   142,047.39x = 15,990,307,123.00
5. Step 5: Solve for x
   x = 15,990,307,123.00/142,047.39
6. Step 6: Final answer
   x = 112,570.23