Finding the Fourth Proportional to 72,019.82, 99,420.96 and 41,799.28

Step by Step Solution

1. Step 1: Write the proportion equation
   72,019.82 : 99,420.96 = 41,799.28 : x
2. Step 2: Convert to fraction form
   72,019.82/99,420.96 = 41,799.28/x
3. Step 3: Cross multiply
   72,019.82x = 99,420.96 × 41,799.28
4. Step 4: Simplify right side
   72,019.82x = 4,155,724,544.91
5. Step 5: Solve for x
   x = 4,155,724,544.91/72,019.82
6. Step 6: Final answer
   x = 57,702.51