Finding the Fourth Proportional to 72,066.75, 99,485.28 and 54,167.52

Step by Step Solution

1. Step 1: Write the proportion equation
   72,066.75 : 99,485.28 = 54,167.52 : x
2. Step 2: Convert to fraction form
   72,066.75/99,485.28 = 54,167.52/x
3. Step 3: Cross multiply
   72,066.75x = 99,485.28 × 54,167.52
4. Step 4: Simplify right side
   72,066.75x = 5,388,870,894.11
5. Step 5: Solve for x
   x = 5,388,870,894.11/72,066.75
6. Step 6: Final answer
   x = 74,776.11