Finding the Fourth Proportional to 72,016.61, 99,400.71 and 43,745.99

Step by Step Solution

1. Step 1: Write the proportion equation
   72,016.61 : 99,400.71 = 43,745.99 : x
2. Step 2: Convert to fraction form
   72,016.61/99,400.71 = 43,745.99/x
3. Step 3: Cross multiply
   72,016.61x = 99,400.71 × 43,745.99
4. Step 4: Simplify right side
   72,016.61x = 4,348,381,968.65
5. Step 5: Solve for x
   x = 4,348,381,968.65/72,016.61
6. Step 6: Final answer
   x = 60,380.27