Finding the Fourth Proportional to 105,061.01, 144,979.13 and 57,311.51

Step by Step Solution

1. Step 1: Write the proportion equation
   105,061.01 : 144,979.13 = 57,311.51 : x
2. Step 2: Convert to fraction form
   105,061.01/144,979.13 = 57,311.51/x
3. Step 3: Cross multiply
   105,061.01x = 144,979.13 × 57,311.51
4. Step 4: Simplify right side
   105,061.01x = 8,308,972,277.17
5. Step 5: Solve for x
   x = 8,308,972,277.17/105,061.01
6. Step 6: Final answer
   x = 79,087.12