Finding the Fourth Proportional to 112,074.90, 168,204.15 and 111,200.10

Step by Step Solution

1. Step 1: Write the proportion equation
   112,074.90 : 168,204.15 = 111,200.10 : x
2. Step 2: Convert to fraction form
   112,074.90/168,204.15 = 111,200.10/x
3. Step 3: Cross multiply
   112,074.90x = 168,204.15 × 111,200.10
4. Step 4: Simplify right side
   112,074.90x = 18,704,318,300.42
5. Step 5: Solve for x
   x = 18,704,318,300.42/112,074.90
6. Step 6: Final answer
   x = 166,891.23