Finding the Fourth Proportional to 105,019.07, 144,920.56 and 59,690.76

Step by Step Solution

1. Step 1: Write the proportion equation
   105,019.07 : 144,920.56 = 59,690.76 : x
2. Step 2: Convert to fraction form
   105,019.07/144,920.56 = 59,690.76/x
3. Step 3: Cross multiply
   105,019.07x = 144,920.56 × 59,690.76
4. Step 4: Simplify right side
   105,019.07x = 8,650,418,366.03
5. Step 5: Solve for x
   x = 8,650,418,366.03/105,019.07
6. Step 6: Final answer
   x = 82,369.98