Finding the Fourth Proportional to 72,722.16, 109,065.24 and 51,600.72

Step by Step Solution

1. Step 1: Write the proportion equation
   72,722.16 : 109,065.24 = 51,600.72 : x
2. Step 2: Convert to fraction form
   72,722.16/109,065.24 = 51,600.72/x
3. Step 3: Cross multiply
   72,722.16x = 109,065.24 × 51,600.72
4. Step 4: Simplify right side
   72,722.16x = 5,627,844,910.97
5. Step 5: Solve for x
   x = 5,627,844,910.97/72,722.16
6. Step 6: Final answer
   x = 77,388.31