Finding the Fourth Proportional to 105,066.51, 144,986.72 and 57,317.01

Step by Step Solution

1. Step 1: Write the proportion equation
   105,066.51 : 144,986.72 = 57,317.01 : x
2. Step 2: Convert to fraction form
   105,066.51/144,986.72 = 57,317.01/x
3. Step 3: Cross multiply
   105,066.51x = 144,986.72 × 57,317.01
4. Step 4: Simplify right side
   105,066.51x = 8,310,204,698.47
5. Step 5: Solve for x
   x = 8,310,204,698.47/105,066.51
6. Step 6: Final answer
   x = 79,094.71