Finding the Fourth Proportional to 105,189.08, 145,171.43 and 62,747.61

Step by Step Solution

1. Step 1: Write the proportion equation
   105,189.08 : 145,171.43 = 62,747.61 : x
2. Step 2: Convert to fraction form
   105,189.08/145,171.43 = 62,747.61/x
3. Step 3: Cross multiply
   105,189.08x = 145,171.43 × 62,747.61
4. Step 4: Simplify right side
   105,189.08x = 9,109,160,429.65
5. Step 5: Solve for x
   x = 9,109,160,429.65/105,189.08
6. Step 6: Final answer
   x = 86,597.96