Finding the Fourth Proportional to 72,990.67, 100,727.21 and 42,769.98

Step by Step Solution

1. Step 1: Write the proportion equation
   72,990.67 : 100,727.21 = 42,769.98 : x
2. Step 2: Convert to fraction form
   72,990.67/100,727.21 = 42,769.98/x
3. Step 3: Cross multiply
   72,990.67x = 100,727.21 × 42,769.98
4. Step 4: Simplify right side
   72,990.67x = 4,308,100,757.16
5. Step 5: Solve for x
   x = 4,308,100,757.16/72,990.67
6. Step 6: Final answer
   x = 59,022.62