Finding the Fourth Proportional to 105,057.24, 144,991.32 and 59,742.12

Step by Step Solution

1. Step 1: Write the proportion equation
   105,057.24 : 144,991.32 = 59,742.12 : x
2. Step 2: Convert to fraction form
   105,057.24/144,991.32 = 59,742.12/x
3. Step 3: Cross multiply
   105,057.24x = 144,991.32 × 59,742.12
4. Step 4: Simplify right side
   105,057.24x = 8,662,088,838.40
5. Step 5: Solve for x
   x = 8,662,088,838.40/105,057.24
6. Step 6: Final answer
   x = 82,451.14