Finding the Fourth Proportional to 105,105.22, 145,048.38 and 59,789.70

Step by Step Solution

1. Step 1: Write the proportion equation
   105,105.22 : 145,048.38 = 59,789.70 : x
2. Step 2: Convert to fraction form
   105,105.22/145,048.38 = 59,789.70/x
3. Step 3: Cross multiply
   105,105.22x = 145,048.38 × 59,789.70
4. Step 4: Simplify right side
   105,105.22x = 8,672,399,125.69
5. Step 5: Solve for x
   x = 8,672,399,125.69/105,105.22
6. Step 6: Final answer
   x = 82,511.59