Finding the Fourth Proportional to 105,243.82, 145,236.42 and 59,919.46

Step by Step Solution

1. Step 1: Write the proportion equation
   105,243.82 : 145,236.42 = 59,919.46 : x
2. Step 2: Convert to fraction form
   105,243.82/145,236.42 = 59,919.46/x
3. Step 3: Cross multiply
   105,243.82x = 145,236.42 × 59,919.46
4. Step 4: Simplify right side
   105,243.82x = 8,702,487,858.73
5. Step 5: Solve for x
   x = 8,702,487,858.73/105,243.82
6. Step 6: Final answer
   x = 82,688.83