Finding the Fourth Proportional to 308,919.98, 463,290.50 and 92,770.00

Step by Step Solution

1. Step 1: Write the proportion equation
   308,919.98 : 463,290.50 = 92,770.00 : x
2. Step 2: Convert to fraction form
   308,919.98/463,290.50 = 92,770.00/x
3. Step 3: Cross multiply
   308,919.98x = 463,290.50 × 92,770.00
4. Step 4: Simplify right side
   308,919.98x = 42,979,458,062.92
5. Step 5: Solve for x
   x = 42,979,458,062.92/308,919.98
6. Step 6: Final answer
   x = 139,128.13