Finding the Fourth Proportional to 72,503.09, 108,794.27 and 28,131.59

Step by Step Solution

1. Step 1: Write the proportion equation
   72,503.09 : 108,794.27 = 28,131.59 : x
2. Step 2: Convert to fraction form
   72,503.09/108,794.27 = 28,131.59/x
3. Step 3: Cross multiply
   72,503.09x = 108,794.27 × 28,131.59
4. Step 4: Simplify right side
   72,503.09x = 3,060,555,113.36
5. Step 5: Solve for x
   x = 3,060,555,113.36/72,503.09
6. Step 6: Final answer
   x = 42,212.76