Finding the Fourth Proportional to 104,934.42, 144,805.23 and 57,186.72

Step by Step Solution

1. Step 1: Write the proportion equation
   104,934.42 : 144,805.23 = 57,186.72 : x
2. Step 2: Convert to fraction form
   104,934.42/144,805.23 = 57,186.72/x
3. Step 3: Cross multiply
   104,934.42x = 144,805.23 × 57,186.72
4. Step 4: Simplify right side
   104,934.42x = 8,280,936,142.55
5. Step 5: Solve for x
   x = 8,280,936,142.55/104,934.42
6. Step 6: Final answer
   x = 78,915.35