Finding the Fourth Proportional to 105,081.39, 145,008.72 and 59,758.56

Step by Step Solution

1. Step 1: Write the proportion equation
   105,081.39 : 145,008.72 = 59,758.56 : x
2. Step 2: Convert to fraction form
   105,081.39/145,008.72 = 59,758.56/x
3. Step 3: Cross multiply
   105,081.39x = 145,008.72 × 59,758.56
4. Step 4: Simplify right side
   105,081.39x = 8,665,512,294.64
5. Step 5: Solve for x
   x = 8,665,512,294.64/105,081.39
6. Step 6: Final answer
   x = 82,464.77