Finding the Fourth Proportional to 111,859.12, 167,788.50 and 76,692.16

Step by Step Solution

1. Step 1: Write the proportion equation
   111,859.12 : 167,788.50 = 76,692.16 : x
2. Step 2: Convert to fraction form
   111,859.12/167,788.50 = 76,692.16/x
3. Step 3: Cross multiply
   111,859.12x = 167,788.50 × 76,692.16
4. Step 4: Simplify right side
   111,859.12x = 12,868,062,488.16
5. Step 5: Solve for x
   x = 12,868,062,488.16/111,859.12
6. Step 6: Final answer
   x = 115,038.12