Finding the Fourth Proportional to 105,079.93, 145,010.76 and 57,334.27

Step by Step Solution

1. Step 1: Write the proportion equation
   105,079.93 : 145,010.76 = 57,334.27 : x
2. Step 2: Convert to fraction form
   105,079.93/145,010.76 = 57,334.27/x
3. Step 3: Cross multiply
   105,079.93x = 145,010.76 × 57,334.27
4. Step 4: Simplify right side
   105,079.93x = 8,314,086,066.75
5. Step 5: Solve for x
   x = 8,314,086,066.75/105,079.93
6. Step 6: Final answer
   x = 79,121.54