Finding the Fourth Proportional to 105,105.83, 145,050.39 and 59,791.79

Step by Step Solution

1. Step 1: Write the proportion equation
   105,105.83 : 145,050.39 = 59,791.79 : x
2. Step 2: Convert to fraction form
   105,105.83/145,050.39 = 59,791.79/x
3. Step 3: Cross multiply
   105,105.83x = 145,050.39 × 59,791.79
4. Step 4: Simplify right side
   105,105.83x = 8,672,822,820.92
5. Step 5: Solve for x
   x = 8,672,822,820.92/105,105.83
6. Step 6: Final answer
   x = 82,515.15