Finding the Fourth Proportional to 105,081.30, 145,033.77 and 64,252.41

Step by Step Solution

1. Step 1: Write the proportion equation
   105,081.30 : 145,033.77 = 64,252.41 : x
2. Step 2: Convert to fraction form
   105,081.30/145,033.77 = 64,252.41/x
3. Step 3: Cross multiply
   105,081.30x = 145,033.77 × 64,252.41
4. Step 4: Simplify right side
   105,081.30x = 9,318,769,253.89
5. Step 5: Solve for x
   x = 9,318,769,253.89/105,081.30
6. Step 6: Final answer
   x = 88,681.52