Finding the Fourth Proportional to 111,933.12, 167,899.50 and 76,766.16

Step by Step Solution

1. Step 1: Write the proportion equation
   111,933.12 : 167,899.50 = 76,766.16 : x
2. Step 2: Convert to fraction form
   111,933.12/167,899.50 = 76,766.16/x
3. Step 3: Cross multiply
   111,933.12x = 167,899.50 × 76,766.16
4. Step 4: Simplify right side
   111,933.12x = 12,888,999,880.92
5. Step 5: Solve for x
   x = 12,888,999,880.92/111,933.12
6. Step 6: Final answer
   x = 115,149.12