Finding the Fourth Proportional to 171,912.78, 258,159.98 and 112,042.98

Step by Step Solution

1. Step 1: Write the proportion equation
   171,912.78 : 258,159.98 = 112,042.98 : x
2. Step 2: Convert to fraction form
   171,912.78/258,159.98 = 112,042.98/x
3. Step 3: Cross multiply
   171,912.78x = 258,159.98 × 112,042.98
4. Step 4: Simplify right side
   171,912.78x = 28,925,013,475.94
5. Step 5: Solve for x
   x = 28,925,013,475.94/171,912.78
6. Step 6: Final answer
   x = 168,254.00