Finding the Fourth Proportional to 105,063.37, 144,984.57 and 57,316.70

Step by Step Solution

1. Step 1: Write the proportion equation
   105,063.37 : 144,984.57 = 57,316.70 : x
2. Step 2: Convert to fraction form
   105,063.37/144,984.57 = 57,316.70/x
3. Step 3: Cross multiply
   105,063.37x = 144,984.57 × 57,316.70
4. Step 4: Simplify right side
   105,063.37x = 8,310,037,103.32
5. Step 5: Solve for x
   x = 8,310,037,103.32/105,063.37
6. Step 6: Final answer
   x = 79,095.48