Finding the Fourth Proportional to 171,597.56, 257,111.82 and 121,428.98

Step by Step Solution

1. Step 1: Write the proportion equation
   171,597.56 : 257,111.82 = 121,428.98 : x
2. Step 2: Convert to fraction form
   171,597.56/257,111.82 = 121,428.98/x
3. Step 3: Cross multiply
   171,597.56x = 257,111.82 × 121,428.98
4. Step 4: Simplify right side
   171,597.56x = 31,220,826,048.54
5. Step 5: Solve for x
   x = 31,220,826,048.54/171,597.56
6. Step 6: Final answer
   x = 181,942.13