Finding the Fourth Proportional to 105,402.82, 145,415.04 and 67,155.52

Step by Step Solution

1. Step 1: Write the proportion equation
   105,402.82 : 145,415.04 = 67,155.52 : x
2. Step 2: Convert to fraction form
   105,402.82/145,415.04 = 67,155.52/x
3. Step 3: Cross multiply
   105,402.82x = 145,415.04 × 67,155.52
4. Step 4: Simplify right side
   105,402.82x = 9,765,422,627.02
5. Step 5: Solve for x
   x = 9,765,422,627.02/105,402.82
6. Step 6: Final answer
   x = 92,648.59