Finding the Fourth Proportional to 105,119.10, 145,064.76 and 57,373.50

Step by Step Solution

1. Step 1: Write the proportion equation
   105,119.10 : 145,064.76 = 57,373.50 : x
2. Step 2: Convert to fraction form
   105,119.10/145,064.76 = 57,373.50/x
3. Step 3: Cross multiply
   105,119.10x = 145,064.76 × 57,373.50
4. Step 4: Simplify right side
   105,119.10x = 8,322,873,007.86
5. Step 5: Solve for x
   x = 8,322,873,007.86/105,119.10
6. Step 6: Final answer
   x = 79,175.65