Finding the Fourth Proportional to 142,772.68, 196,936.86 and 91,851.67

Step by Step Solution

1. Step 1: Write the proportion equation
   142,772.68 : 196,936.86 = 91,851.67 : x
2. Step 2: Convert to fraction form
   142,772.68/196,936.86 = 91,851.67/x
3. Step 3: Cross multiply
   142,772.68x = 196,936.86 × 91,851.67
4. Step 4: Simplify right side
   142,772.68x = 18,088,979,475.56
5. Step 5: Solve for x
   x = 18,088,979,475.56/142,772.68
6. Step 6: Final answer
   x = 126,697.77