Finding the Fourth Proportional to 72,009.20, 99,369.64 and 41,792.16

Step by Step Solution

1. Step 1: Write the proportion equation
   72,009.20 : 99,369.64 = 41,792.16 : x
2. Step 2: Convert to fraction form
   72,009.20/99,369.64 = 41,792.16/x
3. Step 3: Cross multiply
   72,009.20x = 99,369.64 × 41,792.16
4. Step 4: Simplify right side
   72,009.20x = 4,152,871,894.02
5. Step 5: Solve for x
   x = 4,152,871,894.02/72,009.20
6. Step 6: Final answer
   x = 57,671.41