Finding the Fourth Proportional to 142,889.64, 197,097.32 and 91,814.55

Step by Step Solution

1. Step 1: Write the proportion equation
   142,889.64 : 197,097.32 = 91,814.55 : x
2. Step 2: Convert to fraction form
   142,889.64/197,097.32 = 91,814.55/x
3. Step 3: Cross multiply
   142,889.64x = 197,097.32 × 91,814.55
4. Step 4: Simplify right side
   142,889.64x = 18,096,401,282.93
5. Step 5: Solve for x
   x = 18,096,401,282.93/142,889.64
6. Step 6: Final answer
   x = 126,646.00