Finding the Fourth Proportional to 105,402.24, 145,488.96 and 69,624

Step by Step Solution

1. Step 1: Write the proportion equation
   105,402.24 : 145,488.96 = 69,624 : x
2. Step 2: Convert to fraction form
   105,402.24/145,488.96 = 69,624/x
3. Step 3: Cross multiply
   105,402.24x = 145,488.96 × 69,624
4. Step 4: Simplify right side
   105,402.24x = 10,129,523,351.04
5. Step 5: Solve for x
   x = 10,129,523,351.04/105,402.24
6. Step 6: Final answer
   x = 96,103.49