Finding the Fourth Proportional to 111,941.30, 168,041.55 and 67,618.10

Step by Step Solution

1. Step 1: Write the proportion equation
   111,941.30 : 168,041.55 = 67,618.10 : x
2. Step 2: Convert to fraction form
   111,941.30/168,041.55 = 67,618.10/x
3. Step 3: Cross multiply
   111,941.30x = 168,041.55 × 67,618.10
4. Step 4: Simplify right side
   111,941.30x = 11,362,650,332.06
5. Step 5: Solve for x
   x = 11,362,650,332.06/111,941.30
6. Step 6: Final answer
   x = 101,505.43