Finding the Fourth Proportional to 142,731.27, 214,096.83 and 133,272.77

Step by Step Solution

1. Step 1: Write the proportion equation
   142,731.27 : 214,096.83 = 133,272.77 : x
2. Step 2: Convert to fraction form
   142,731.27/214,096.83 = 133,272.77/x
3. Step 3: Cross multiply
   142,731.27x = 214,096.83 × 133,272.77
4. Step 4: Simplify right side
   142,731.27x = 28,533,278,117.56
5. Step 5: Solve for x
   x = 28,533,278,117.56/142,731.27
6. Step 6: Final answer
   x = 199,909.09