Finding the Fourth Proportional to 145,789.10, 217,884.87 and 106,429.10

Step by Step Solution

1. Step 1: Write the proportion equation
   145,789.10 : 217,884.87 = 106,429.10 : x
2. Step 2: Convert to fraction form
   145,789.10/217,884.87 = 106,429.10/x
3. Step 3: Cross multiply
   145,789.10x = 217,884.87 × 106,429.10
4. Step 4: Simplify right side
   145,789.10x = 23,189,290,617.72
5. Step 5: Solve for x
   x = 23,189,290,617.72/145,789.10
6. Step 6: Final answer
   x = 159,060.52