Finding the Fourth Proportional to 72,369.78, 99,904.50 and 48,512.04

Step by Step Solution

1. Step 1: Write the proportion equation
   72,369.78 : 99,904.50 = 48,512.04 : x
2. Step 2: Convert to fraction form
   72,369.78/99,904.50 = 48,512.04/x
3. Step 3: Cross multiply
   72,369.78x = 99,904.50 × 48,512.04
4. Step 4: Simplify right side
   72,369.78x = 4,846,571,100.18
5. Step 5: Solve for x
   x = 4,846,571,100.18/72,369.78
6. Step 6: Final answer
   x = 66,969.54