Finding the Fourth Proportional to 105,804.49, 146,004.38 and 58,054.09

Step by Step Solution

1. Step 1: Write the proportion equation
   105,804.49 : 146,004.38 = 58,054.09 : x
2. Step 2: Convert to fraction form
   105,804.49/146,004.38 = 58,054.09/x
3. Step 3: Cross multiply
   105,804.49x = 146,004.38 × 58,054.09
4. Step 4: Simplify right side
   105,804.49x = 8,476,150,686.89
5. Step 5: Solve for x
   x = 8,476,150,686.89/105,804.49
6. Step 6: Final answer
   x = 80,111.45