Finding the Fourth Proportional to 105,019.58, 144,921.24 and 59,691.26

Step by Step Solution

1. Step 1: Write the proportion equation
   105,019.58 : 144,921.24 = 59,691.26 : x
2. Step 2: Convert to fraction form
   105,019.58/144,921.24 = 59,691.26/x
3. Step 3: Cross multiply
   105,019.58x = 144,921.24 × 59,691.26
4. Step 4: Simplify right side
   105,019.58x = 8,650,530,691.76
5. Step 5: Solve for x
   x = 8,650,530,691.76/105,019.58
6. Step 6: Final answer
   x = 82,370.65