Finding the Fourth Proportional to 72,581.24, 108,829.47 and 28,156.07

Step by Step Solution

1. Step 1: Write the proportion equation
   72,581.24 : 108,829.47 = 28,156.07 : x
2. Step 2: Convert to fraction form
   72,581.24/108,829.47 = 28,156.07/x
3. Step 3: Cross multiply
   72,581.24x = 108,829.47 × 28,156.07
4. Step 4: Simplify right side
   72,581.24x = 3,064,210,447.46
5. Step 5: Solve for x
   x = 3,064,210,447.46/72,581.24
6. Step 6: Final answer
   x = 42,217.67