Finding the Fourth Proportional to 187,099.37, 258,123.86 and 115,354.83

Step by Step Solution

1. Step 1: Write the proportion equation
   187,099.37 : 258,123.86 = 115,354.83 : x
2. Step 2: Convert to fraction form
   187,099.37/258,123.86 = 115,354.83/x
3. Step 3: Cross multiply
   187,099.37x = 258,123.86 × 115,354.83
4. Step 4: Simplify right side
   187,099.37x = 29,775,835,461.89
5. Step 5: Solve for x
   x = 29,775,835,461.89/187,099.37
6. Step 6: Final answer
   x = 159,144.50