Finding the Fourth Proportional to 105,019.68, 144,954.72 and 59,724.16

Step by Step Solution

1. Step 1: Write the proportion equation
   105,019.68 : 144,954.72 = 59,724.16 : x
2. Step 2: Convert to fraction form
   105,019.68/144,954.72 = 59,724.16/x
3. Step 3: Cross multiply
   105,019.68x = 144,954.72 × 59,724.16
4. Step 4: Simplify right side
   105,019.68x = 8,657,298,890.04
5. Step 5: Solve for x
   x = 8,657,298,890.04/105,019.68
6. Step 6: Final answer
   x = 82,435.01