Finding the Fourth Proportional to 72,086.72, 108,153.20 and 34,649.51

Step by Step Solution

1. Step 1: Write the proportion equation
   72,086.72 : 108,153.20 = 34,649.51 : x
2. Step 2: Convert to fraction form
   72,086.72/108,153.20 = 34,649.51/x
3. Step 3: Cross multiply
   72,086.72x = 108,153.20 × 34,649.51
4. Step 4: Simplify right side
   72,086.72x = 3,747,454,930.79
5. Step 5: Solve for x
   x = 3,747,454,930.79/72,086.72
6. Step 6: Final answer
   x = 51,985.38