Finding the Fourth Proportional to 143,286.72, 197,736.83 and 89,602.86

Step by Step Solution

1. Step 1: Write the proportion equation
   143,286.72 : 197,736.83 = 89,602.86 : x
2. Step 2: Convert to fraction form
   143,286.72/197,736.83 = 89,602.86/x
3. Step 3: Cross multiply
   143,286.72x = 197,736.83 × 89,602.86
4. Step 4: Simplify right side
   143,286.72x = 17,717,785,495.33
5. Step 5: Solve for x
   x = 17,717,785,495.33/143,286.72
6. Step 6: Final answer
   x = 123,652.67