Finding the Fourth Proportional to 111,022.18, 153,113.76 and 78,692.85

Step by Step Solution

1. Step 1: Write the proportion equation
   111,022.18 : 153,113.76 = 78,692.85 : x
2. Step 2: Convert to fraction form
   111,022.18/153,113.76 = 78,692.85/x
3. Step 3: Cross multiply
   111,022.18x = 153,113.76 × 78,692.85
4. Step 4: Simplify right side
   111,022.18x = 12,048,958,148.62
5. Step 5: Solve for x
   x = 12,048,958,148.62/111,022.18
6. Step 6: Final answer
   x = 108,527.49