Finding the Fourth Proportional to 89,236.42, 123,140.73 and 53,429.38

Step by Step Solution

1. Step 1: Write the proportion equation
   89,236.42 : 123,140.73 = 53,429.38 : x
2. Step 2: Convert to fraction form
   89,236.42/123,140.73 = 53,429.38/x
3. Step 3: Cross multiply
   89,236.42x = 123,140.73 × 53,429.38
4. Step 4: Simplify right side
   89,236.42x = 6,579,332,856.65
5. Step 5: Solve for x
   x = 6,579,332,856.65/89,236.42
6. Step 6: Final answer
   x = 73,729.23