Finding the Fourth Proportional to 72,711.47, 109,066.38 and 28,369.37

Step by Step Solution

1. Step 1: Write the proportion equation
   72,711.47 : 109,066.38 = 28,369.37 : x
2. Step 2: Convert to fraction form
   72,711.47/109,066.38 = 28,369.37/x
3. Step 3: Cross multiply
   72,711.47x = 109,066.38 × 28,369.37
4. Step 4: Simplify right side
   72,711.47x = 3,094,144,761.45
5. Step 5: Solve for x
   x = 3,094,144,761.45/72,711.47
6. Step 6: Final answer
   x = 42,553.74