Finding the Fourth Proportional to 105,016.16, 144,925.82 and 57,272.12

Step by Step Solution

1. Step 1: Write the proportion equation
   105,016.16 : 144,925.82 = 57,272.12 : x
2. Step 2: Convert to fraction form
   105,016.16/144,925.82 = 57,272.12/x
3. Step 3: Cross multiply
   105,016.16x = 144,925.82 × 57,272.12
4. Step 4: Simplify right side
   105,016.16x = 8,300,208,954.14
5. Step 5: Solve for x
   x = 8,300,208,954.14/105,016.16
6. Step 6: Final answer
   x = 79,037.44