Finding the Fourth Proportional to 72,529.27, 108,742.88 and 28,118.59

Step by Step Solution

1. Step 1: Write the proportion equation
   72,529.27 : 108,742.88 = 28,118.59 : x
2. Step 2: Convert to fraction form
   72,529.27/108,742.88 = 28,118.59/x
3. Step 3: Cross multiply
   72,529.27x = 108,742.88 × 28,118.59
4. Step 4: Simplify right side
   72,529.27x = 3,057,696,317.55
5. Step 5: Solve for x
   x = 3,057,696,317.55/72,529.27
6. Step 6: Final answer
   x = 42,158.10