Finding the Fourth Proportional to 108,728.05, 163,133.59 and 42,214.88

Step by Step Solution

1. Step 1: Write the proportion equation
   108,728.05 : 163,133.59 = 42,214.88 : x
2. Step 2: Convert to fraction form
   108,728.05/163,133.59 = 42,214.88/x
3. Step 3: Cross multiply
   108,728.05x = 163,133.59 × 42,214.88
4. Step 4: Simplify right side
   108,728.05x = 6,886,664,925.82
5. Step 5: Solve for x
   x = 6,886,664,925.82/108,728.05
6. Step 6: Final answer
   x = 63,338.44