Finding the Fourth Proportional to 72,948.59, 109,422.77 and 28,544.18

Step by Step Solution

1. Step 1: Write the proportion equation
   72,948.59 : 109,422.77 = 28,544.18 : x
2. Step 2: Convert to fraction form
   72,948.59/109,422.77 = 28,544.18/x
3. Step 3: Cross multiply
   72,948.59x = 109,422.77 × 28,544.18
4. Step 4: Simplify right side
   72,948.59x = 3,123,382,767.23
5. Step 5: Solve for x
   x = 3,123,382,767.23/72,948.59
6. Step 6: Final answer
   x = 42,816.22