Finding the Fourth Proportional to 228,973.07, 315,776.00 and 142,940.00

Step by Step Solution

1. Step 1: Write the proportion equation
   228,973.07 : 315,776.00 = 142,940.00 : x
2. Step 2: Convert to fraction form
   228,973.07/315,776.00 = 142,940.00/x
3. Step 3: Cross multiply
   228,973.07x = 315,776.00 × 142,940.00
4. Step 4: Simplify right side
   228,973.07x = 45,137,020,218.47
5. Step 5: Solve for x
   x = 45,137,020,218.47/228,973.07
6. Step 6: Final answer
   x = 197,128.07