Finding the Fourth Proportional to 72,799.98, 109,134.98 and 28,416.38

Step by Step Solution

1. Step 1: Write the proportion equation
   72,799.98 : 109,134.98 = 28,416.38 : x
2. Step 2: Convert to fraction form
   72,799.98/109,134.98 = 28,416.38/x
3. Step 3: Cross multiply
   72,799.98x = 109,134.98 × 28,416.38
4. Step 4: Simplify right side
   72,799.98x = 3,101,221,062.97
5. Step 5: Solve for x
   x = 3,101,221,062.97/72,799.98
6. Step 6: Final answer
   x = 42,599.20