Finding the Fourth Proportional to 105,376.63, 145,433.03 and 69,108.58

Step by Step Solution

1. Step 1: Write the proportion equation
   105,376.63 : 145,433.03 = 69,108.58 : x
2. Step 2: Convert to fraction form
   105,376.63/145,433.03 = 69,108.58/x
3. Step 3: Cross multiply
   105,376.63x = 145,433.03 × 69,108.58
4. Step 4: Simplify right side
   105,376.63x = 10,050,670,188.40
5. Step 5: Solve for x
   x = 10,050,670,188.40/105,376.63
6. Step 6: Final answer
   x = 95,378.55