Finding the Fourth Proportional to 105,114.10, 145,057.86 and 57,368.50

Step by Step Solution

1. Step 1: Write the proportion equation
   105,114.10 : 145,057.86 = 57,368.50 : x
2. Step 2: Convert to fraction form
   105,114.10/145,057.86 = 57,368.50/x
3. Step 3: Cross multiply
   105,114.10x = 145,057.86 × 57,368.50
4. Step 4: Simplify right side
   105,114.10x = 8,321,751,841.41
5. Step 5: Solve for x
   x = 8,321,751,841.41/105,114.10
6. Step 6: Final answer
   x = 79,168.75