Finding the Fourth Proportional to 372,180.79, 558,271.17 and 161,818.72

Step by Step Solution

1. Step 1: Write the proportion equation
   372,180.79 : 558,271.17 = 161,818.72 : x
2. Step 2: Convert to fraction form
   372,180.79/558,271.17 = 161,818.72/x
3. Step 3: Cross multiply
   372,180.79x = 558,271.17 × 161,818.72
4. Step 4: Simplify right side
   372,180.79x = 90,338,726,142.30
5. Step 5: Solve for x
   x = 90,338,726,142.30/372,180.79
6. Step 6: Final answer
   x = 242,728.07