Finding the Fourth Proportional to 223,320, 308,181.76 and 122,718.72

Step by Step Solution

1. Step 1: Write the proportion equation
   223,320 : 308,181.76 = 122,718.72 : x
2. Step 2: Convert to fraction form
   223,320/308,181.76 = 122,718.72/x
3. Step 3: Cross multiply
   223,320x = 308,181.76 × 122,718.72
4. Step 4: Simplify right side
   223,320x = 37,819,671,114.55
5. Step 5: Solve for x
   x = 37,819,671,114.55/223,320
6. Step 6: Final answer
   x = 169,351.92