Finding the Fourth Proportional to 105,164.61, 145,139.90 and 59,853.62

Step by Step Solution

1. Step 1: Write the proportion equation
   105,164.61 : 145,139.90 = 59,853.62 : x
2. Step 2: Convert to fraction form
   105,164.61/145,139.90 = 59,853.62/x
3. Step 3: Cross multiply
   105,164.61x = 145,139.90 × 59,853.62
4. Step 4: Simplify right side
   105,164.61x = 8,687,147,396.47
5. Step 5: Solve for x
   x = 8,687,147,396.47/105,164.61
6. Step 6: Final answer
   x = 82,605.24