Finding the Fourth Proportional to 105,054.89, 144,977.81 and 57,310.01

Step by Step Solution

1. Step 1: Write the proportion equation
   105,054.89 : 144,977.81 = 57,310.01 : x
2. Step 2: Convert to fraction form
   105,054.89/144,977.81 = 57,310.01/x
3. Step 3: Cross multiply
   105,054.89x = 144,977.81 × 57,310.01
4. Step 4: Simplify right side
   105,054.89x = 8,308,679,454.33
5. Step 5: Solve for x
   x = 8,308,679,454.33/105,054.89
6. Step 6: Final answer
   x = 79,088.94