Finding the Fourth Proportional to 105,594.47, 145,603.56 and 67,293.31

Step by Step Solution

1. Step 1: Write the proportion equation
   105,594.47 : 145,603.56 = 67,293.31 : x
2. Step 2: Convert to fraction form
   105,594.47/145,603.56 = 67,293.31/x
3. Step 3: Cross multiply
   105,594.47x = 145,603.56 × 67,293.31
4. Step 4: Simplify right side
   105,594.47x = 9,798,145,500.18
5. Step 5: Solve for x
   x = 9,798,145,500.18/105,594.47
6. Step 6: Final answer
   x = 92,790.33