Finding the Fourth Proportional to 105,573.44, 145,691.39 and 57,827.59

Step by Step Solution

1. Step 1: Write the proportion equation
   105,573.44 : 145,691.39 = 57,827.59 : x
2. Step 2: Convert to fraction form
   105,573.44/145,691.39 = 57,827.59/x
3. Step 3: Cross multiply
   105,573.44x = 145,691.39 × 57,827.59
4. Step 4: Simplify right side
   105,573.44x = 8,424,980,949.86
5. Step 5: Solve for x
   x = 8,424,980,949.86/105,573.44
6. Step 6: Final answer
   x = 79,802.09