Finding the Fourth Proportional to 105,019.28, 144,861.48 and 62,552.72

Step by Step Solution

1. Step 1: Write the proportion equation
   105,019.28 : 144,861.48 = 62,552.72 : x
2. Step 2: Convert to fraction form
   105,019.28/144,861.48 = 62,552.72/x
3. Step 3: Cross multiply
   105,019.28x = 144,861.48 × 62,552.72
4. Step 4: Simplify right side
   105,019.28x = 9,061,479,597.23
5. Step 5: Solve for x
   x = 9,061,479,597.23/105,019.28
6. Step 6: Final answer
   x = 86,283.96