Finding the Fourth Proportional to 372,061.16, 558,079.20 and 161,699.12

Step by Step Solution

1. Step 1: Write the proportion equation
   372,061.16 : 558,079.20 = 161,699.12 : x
2. Step 2: Convert to fraction form
   372,061.16/558,079.20 = 161,699.12/x
3. Step 3: Cross multiply
   372,061.16x = 558,079.20 × 161,699.12
4. Step 4: Simplify right side
   372,061.16x = 90,240,915,530.30
5. Step 5: Solve for x
   x = 90,240,915,530.30/372,061.16
6. Step 6: Final answer
   x = 242,543.23