Finding the Fourth Proportional to 105,005.25, 144,903.20 and 59,689.19

Step by Step Solution

1. Step 1: Write the proportion equation
   105,005.25 : 144,903.20 = 59,689.19 : x
2. Step 2: Convert to fraction form
   105,005.25/144,903.20 = 59,689.19/x
3. Step 3: Cross multiply
   105,005.25x = 144,903.20 × 59,689.19
4. Step 4: Simplify right side
   105,005.25x = 8,649,154,700.22
5. Step 5: Solve for x
   x = 8,649,154,700.22/105,005.25
6. Step 6: Final answer
   x = 82,368.78