Finding the Fourth Proportional to 108,855.72, 163,293.89 and 42,300.99

Step by Step Solution

1. Step 1: Write the proportion equation
   108,855.72 : 163,293.89 = 42,300.99 : x
2. Step 2: Convert to fraction form
   108,855.72/163,293.89 = 42,300.99/x
3. Step 3: Cross multiply
   108,855.72x = 163,293.89 × 42,300.99
4. Step 4: Simplify right side
   108,855.72x = 6,907,492,996.45
5. Step 5: Solve for x
   x = 6,907,492,996.45/108,855.72
6. Step 6: Final answer
   x = 63,455.49