Finding the Fourth Proportional to 105,591.90, 145,716.39 and 57,848.22

Step by Step Solution

1. Step 1: Write the proportion equation
   105,591.90 : 145,716.39 = 57,848.22 : x
2. Step 2: Convert to fraction form
   105,591.90/145,716.39 = 57,848.22/x
3. Step 3: Cross multiply
   105,591.90x = 145,716.39 × 57,848.22
4. Step 4: Simplify right side
   105,591.90x = 8,429,433,786.33
5. Step 5: Solve for x
   x = 8,429,433,786.33/105,591.90
6. Step 6: Final answer
   x = 79,830.31