Finding the Fourth Proportional to 72,066.75, 99,423.48 and 48,155.55

Step by Step Solution

1. Step 1: Write the proportion equation
   72,066.75 : 99,423.48 = 48,155.55 : x
2. Step 2: Convert to fraction form
   72,066.75/99,423.48 = 48,155.55/x
3. Step 3: Cross multiply
   72,066.75x = 99,423.48 × 48,155.55
4. Step 4: Simplify right side
   72,066.75x = 4,787,792,362.31
5. Step 5: Solve for x
   x = 4,787,792,362.31/72,066.75
6. Step 6: Final answer
   x = 66,435.52