Finding the Fourth Proportional to 115,383.72, 159,139.98 and 72,926.76

Step by Step Solution

1. Step 1: Write the proportion equation
   115,383.72 : 159,139.98 = 72,926.76 : x
2. Step 2: Convert to fraction form
   115,383.72/159,139.98 = 72,926.76/x
3. Step 3: Cross multiply
   115,383.72x = 159,139.98 × 72,926.76
4. Step 4: Simplify right side
   115,383.72x = 11,605,563,127.86
5. Step 5: Solve for x
   x = 11,605,563,127.86/115,383.72
6. Step 6: Final answer
   x = 100,582.33