Finding the Fourth Proportional to 142,714.81, 196,851.51 and 91,791.98

Step by Step Solution

1. Step 1: Write the proportion equation
   142,714.81 : 196,851.51 = 91,791.98 : x
2. Step 2: Convert to fraction form
   142,714.81/196,851.51 = 91,791.98/x
3. Step 3: Cross multiply
   142,714.81x = 196,851.51 × 91,791.98
4. Step 4: Simplify right side
   142,714.81x = 18,069,389,868.89
5. Step 5: Solve for x
   x = 18,069,389,868.89/142,714.81
6. Step 6: Final answer
   x = 126,611.88