Finding the Fourth Proportional to 72,093.04, 99,479.90 and 39,825.78

Step by Step Solution

1. Step 1: Write the proportion equation
   72,093.04 : 99,479.90 = 39,825.78 : x
2. Step 2: Convert to fraction form
   72,093.04/99,479.90 = 39,825.78/x
3. Step 3: Cross multiply
   72,093.04x = 99,479.90 × 39,825.78
4. Step 4: Simplify right side
   72,093.04x = 3,961,864,114.32
5. Step 5: Solve for x
   x = 3,961,864,114.32/72,093.04
6. Step 6: Final answer
   x = 54,954.88