Finding the Fourth Proportional to 308,921.98, 463,293.49 and 92,772

Step by Step Solution

1. Step 1: Write the proportion equation
   308,921.98 : 463,293.49 = 92,772 : x
2. Step 2: Convert to fraction form
   308,921.98/463,293.49 = 92,772/x
3. Step 3: Cross multiply
   308,921.98x = 463,293.49 × 92,772
4. Step 4: Simplify right side
   308,921.98x = 42,980,663,654.28
5. Step 5: Solve for x
   x = 42,980,663,654.28/308,921.98
6. Step 6: Final answer
   x = 139,131.13