Finding the Fourth Proportional to 105,018.07, 144,919.18 and 59,689.76

Step by Step Solution

1. Step 1: Write the proportion equation
   105,018.07 : 144,919.18 = 59,689.76 : x
2. Step 2: Convert to fraction form
   105,018.07/144,919.18 = 59,689.76/x
3. Step 3: Cross multiply
   105,018.07x = 144,919.18 × 59,689.76
4. Step 4: Simplify right side
   105,018.07x = 8,650,190,903.03
5. Step 5: Solve for x
   x = 8,650,190,903.03/105,018.07
6. Step 6: Final answer
   x = 82,368.60