Finding the Fourth Proportional to 197,969.36, 296,980.72 and 57,726.72

Step by Step Solution

1. Step 1: Write the proportion equation
   197,969.36 : 296,980.72 = 57,726.72 : x
2. Step 2: Convert to fraction form
   197,969.36/296,980.72 = 57,726.72/x
3. Step 3: Cross multiply
   197,969.36x = 296,980.72 × 57,726.72
4. Step 4: Simplify right side
   197,969.36x = 17,143,722,868.84
5. Step 5: Solve for x
   x = 17,143,722,868.84/197,969.36
6. Step 6: Final answer
   x = 86,597.86