Finding the Fourth Proportional to 108,870.26, 163,315.67 and 42,315.49

Step by Step Solution

1. Step 1: Write the proportion equation
   108,870.26 : 163,315.67 = 42,315.49 : x
2. Step 2: Convert to fraction form
   108,870.26/163,315.67 = 42,315.49/x
3. Step 3: Cross multiply
   108,870.26x = 163,315.67 × 42,315.49
4. Step 4: Simplify right side
   108,870.26x = 6,910,781,980.86
5. Step 5: Solve for x
   x = 6,910,781,980.86/108,870.26
6. Step 6: Final answer
   x = 63,477.22