Finding the Fourth Proportional to 105,251.02, 145,244.71 and 57,503.34

Step by Step Solution

1. Step 1: Write the proportion equation
   105,251.02 : 145,244.71 = 57,503.34 : x
2. Step 2: Convert to fraction form
   105,251.02/145,244.71 = 57,503.34/x
3. Step 3: Cross multiply
   105,251.02x = 145,244.71 × 57,503.34
4. Step 4: Simplify right side
   105,251.02x = 8,352,055,942.33
5. Step 5: Solve for x
   x = 8,352,055,942.33/105,251.02
6. Step 6: Final answer
   x = 79,353.68