Finding the Fourth Proportional to 105,159.58, 145,120.55 and 67,433.98

Step by Step Solution

1. Step 1: Write the proportion equation
   105,159.58 : 145,120.55 = 67,433.98 : x
2. Step 2: Convert to fraction form
   105,159.58/145,120.55 = 67,433.98/x
3. Step 3: Cross multiply
   105,159.58x = 145,120.55 × 67,433.98
4. Step 4: Simplify right side
   105,159.58x = 9,786,056,266.29
5. Step 5: Solve for x
   x = 9,786,056,266.29/105,159.58
6. Step 6: Final answer
   x = 93,059.10