Finding the Fourth Proportional to 105,393.24, 145,468.32 and 88,370.28

Step by Step Solution

1. Step 1: Write the proportion equation
   105,393.24 : 145,468.32 = 88,370.28 : x
2. Step 2: Convert to fraction form
   105,393.24/145,468.32 = 88,370.28/x
3. Step 3: Cross multiply
   105,393.24x = 145,468.32 × 88,370.28
4. Step 4: Simplify right side
   105,393.24x = 12,855,076,169.53
5. Step 5: Solve for x
   x = 12,855,076,169.53/105,393.24
6. Step 6: Final answer
   x = 121,972.49