Finding the Fourth Proportional to 105,790.83, 145,991.55 and 58,044.51

Step by Step Solution

1. Step 1: Write the proportion equation
   105,790.83 : 145,991.55 = 58,044.51 : x
2. Step 2: Convert to fraction form
   105,790.83/145,991.55 = 58,044.51/x
3. Step 3: Cross multiply
   105,790.83x = 145,991.55 × 58,044.51
4. Step 4: Simplify right side
   105,790.83x = 8,474,007,983.89
5. Step 5: Solve for x
   x = 8,474,007,983.89/105,790.83
6. Step 6: Final answer
   x = 80,101.54