Finding the Fourth Proportional to 108,801.42, 163,084.05 and 42,221.94

Step by Step Solution

1. Step 1: Write the proportion equation
   108,801.42 : 163,084.05 = 42,221.94 : x
2. Step 2: Convert to fraction form
   108,801.42/163,084.05 = 42,221.94/x
3. Step 3: Cross multiply
   108,801.42x = 163,084.05 × 42,221.94
4. Step 4: Simplify right side
   108,801.42x = 6,885,724,974.06
5. Step 5: Solve for x
   x = 6,885,724,974.06/108,801.42
6. Step 6: Final answer
   x = 63,287.09