Finding the Fourth Proportional to 108,973.90, 163,485.15 and 42,408.10

Step by Step Solution

1. Step 1: Write the proportion equation
   108,973.90 : 163,485.15 = 42,408.10 : x
2. Step 2: Convert to fraction form
   108,973.90/163,485.15 = 42,408.10/x
3. Step 3: Cross multiply
   108,973.90x = 163,485.15 × 42,408.10
4. Step 4: Simplify right side
   108,973.90x = 6,933,094,589.72
5. Step 5: Solve for x
   x = 6,933,094,589.72/108,973.90
6. Step 6: Final answer
   x = 63,621.61