Finding the Fourth Proportional to 108,868.72, 163,261.09 and 42,300.09

Step by Step Solution

1. Step 1: Write the proportion equation
   108,868.72 : 163,261.09 = 42,300.09 : x
2. Step 2: Convert to fraction form
   108,868.72/163,261.09 = 42,300.09/x
3. Step 3: Cross multiply
   108,868.72x = 163,261.09 × 42,300.09
4. Step 4: Simplify right side
   108,868.72x = 6,905,958,800.50
5. Step 5: Solve for x
   x = 6,905,958,800.50/108,868.72
6. Step 6: Final answer
   x = 63,433.82