Finding the Fourth Proportional to 72,096.48, 99,540.06 and 64,529.82

Step by Step Solution

1. Step 1: Write the proportion equation
   72,096.48 : 99,540.06 = 64,529.82 : x
2. Step 2: Convert to fraction form
   72,096.48/99,540.06 = 64,529.82/x
3. Step 3: Cross multiply
   72,096.48x = 99,540.06 × 64,529.82
4. Step 4: Simplify right side
   72,096.48x = 6,423,302,154.59
5. Step 5: Solve for x
   x = 6,423,302,154.59/72,096.48
6. Step 6: Final answer
   x = 89,093.15