Finding the Fourth Proportional to 105,041.90, 144,963.72 and 57,296.04

Step by Step Solution

1. Step 1: Write the proportion equation
   105,041.90 : 144,963.72 = 57,296.04 : x
2. Step 2: Convert to fraction form
   105,041.90/144,963.72 = 57,296.04/x
3. Step 3: Cross multiply
   105,041.90x = 144,963.72 × 57,296.04
4. Step 4: Simplify right side
   105,041.90x = 8,305,847,099.67
5. Step 5: Solve for x
   x = 8,305,847,099.67/105,041.90
6. Step 6: Final answer
   x = 79,071.76