Finding the Fourth Proportional to 108,757.89, 163,090.67 and 42,185.61

Step by Step Solution

1. Step 1: Write the proportion equation
   108,757.89 : 163,090.67 = 42,185.61 : x
2. Step 2: Convert to fraction form
   108,757.89/163,090.67 = 42,185.61/x
3. Step 3: Cross multiply
   108,757.89x = 163,090.67 × 42,185.61
4. Step 4: Simplify right side
   108,757.89x = 6,880,079,188.33
5. Step 5: Solve for x
   x = 6,880,079,188.33/108,757.89
6. Step 6: Final answer
   x = 63,260.51