Finding the Fourth Proportional to 105,062.61, 144,983.54 and 57,315.95

Step by Step Solution

1. Step 1: Write the proportion equation
   105,062.61 : 144,983.54 = 57,315.95 : x
2. Step 2: Convert to fraction form
   105,062.61/144,983.54 = 57,315.95/x
3. Step 3: Cross multiply
   105,062.61x = 144,983.54 × 57,315.95
4. Step 4: Simplify right side
   105,062.61x = 8,309,868,969.12
5. Step 5: Solve for x
   x = 8,309,868,969.12/105,062.61
6. Step 6: Final answer
   x = 79,094.44