Finding the Fourth Proportional to 117,072.55, 161,560.32 and 63,357.61

Step by Step Solution

1. Step 1: Write the proportion equation
   117,072.55 : 161,560.32 = 63,357.61 : x
2. Step 2: Convert to fraction form
   117,072.55/161,560.32 = 63,357.61/x
3. Step 3: Cross multiply
   117,072.55x = 161,560.32 × 63,357.61
4. Step 4: Simplify right side
   117,072.55x = 10,236,076,185.58
5. Step 5: Solve for x
   x = 10,236,076,185.58/117,072.55
6. Step 6: Final answer
   x = 87,433.61