Finding the Fourth Proportional to 105,238.45, 145,234.25 and 59,917.33

Step by Step Solution

1. Step 1: Write the proportion equation
   105,238.45 : 145,234.25 = 59,917.33 : x
2. Step 2: Convert to fraction form
   105,238.45/145,234.25 = 59,917.33/x
3. Step 3: Cross multiply
   105,238.45x = 145,234.25 × 59,917.33
4. Step 4: Simplify right side
   105,238.45x = 8,702,048,484.55
5. Step 5: Solve for x
   x = 8,702,048,484.55/105,238.45
6. Step 6: Final answer
   x = 82,688.87