Finding the Fourth Proportional to 72,944.34, 109,342.71 and 28,543.38

Step by Step Solution

1. Step 1: Write the proportion equation
   72,944.34 : 109,342.71 = 28,543.38 : x
2. Step 2: Convert to fraction form
   72,944.34/109,342.71 = 28,543.38/x
3. Step 3: Cross multiply
   72,944.34x = 109,342.71 × 28,543.38
4. Step 4: Simplify right side
   72,944.34x = 3,121,010,521.76
5. Step 5: Solve for x
   x = 3,121,010,521.76/72,944.34
6. Step 6: Final answer
   x = 42,786.19