Finding the Fourth Proportional to 199,710.54, 275,602.41 and 113,665.30

Step by Step Solution

1. Step 1: Write the proportion equation
   199,710.54 : 275,602.41 = 113,665.30 : x
2. Step 2: Convert to fraction form
   199,710.54/275,602.41 = 113,665.30/x
3. Step 3: Cross multiply
   199,710.54x = 275,602.41 × 113,665.30
4. Step 4: Simplify right side
   199,710.54x = 31,326,429,924.37
5. Step 5: Solve for x
   x = 31,326,429,924.37/199,710.54
6. Step 6: Final answer
   x = 156,859.17