Finding the Fourth Proportional to 142,714.32, 196,850.81 and 91,791.47

Step by Step Solution

1. Step 1: Write the proportion equation
   142,714.32 : 196,850.81 = 91,791.47 : x
2. Step 2: Convert to fraction form
   142,714.32/196,850.81 = 91,791.47/x
3. Step 3: Cross multiply
   142,714.32x = 196,850.81 × 91,791.47
4. Step 4: Simplify right side
   142,714.32x = 18,069,223,777.38
5. Step 5: Solve for x
   x = 18,069,223,777.38/142,714.32
6. Step 6: Final answer
   x = 126,611.15