Finding the Fourth Proportional to 105,049, 144,965.16 and 57,302.72

Step by Step Solution

1. Step 1: Write the proportion equation
   105,049 : 144,965.16 = 57,302.72 : x
2. Step 2: Convert to fraction form
   105,049/144,965.16 = 57,302.72/x
3. Step 3: Cross multiply
   105,049x = 144,965.16 × 57,302.72
4. Step 4: Simplify right side
   105,049x = 8,306,897,973.24
5. Step 5: Solve for x
   x = 8,306,897,973.24/105,049
6. Step 6: Final answer
   x = 79,076.41