Finding the Fourth Proportional to 105,054.47, 144,975.17 and 57,308.01

Step by Step Solution

1. Step 1: Write the proportion equation
   105,054.47 : 144,975.17 = 57,308.01 : x
2. Step 2: Convert to fraction form
   105,054.47/144,975.17 = 57,308.01/x
3. Step 3: Cross multiply
   105,054.47x = 144,975.17 × 57,308.01
4. Step 4: Simplify right side
   105,054.47x = 8,308,237,769.37
5. Step 5: Solve for x
   x = 8,308,237,769.37/105,054.47
6. Step 6: Final answer
   x = 79,085.05