Finding the Fourth Proportional to 105,188.33, 145,172.31 and 59,249.47

Step by Step Solution

1. Step 1: Write the proportion equation
   105,188.33 : 145,172.31 = 59,249.47 : x
2. Step 2: Convert to fraction form
   105,188.33/145,172.31 = 59,249.47/x
3. Step 3: Cross multiply
   105,188.33x = 145,172.31 × 59,249.47
4. Step 4: Simplify right side
   105,188.33x = 8,601,382,426.18
5. Step 5: Solve for x
   x = 8,601,382,426.18/105,188.33
6. Step 6: Final answer
   x = 81,771.26