Finding the Fourth Proportional to 187,111.01, 258,139.89 and 115,366.47

Step by Step Solution

1. Step 1: Write the proportion equation
   187,111.01 : 258,139.89 = 115,366.47 : x
2. Step 2: Convert to fraction form
   187,111.01/258,139.89 = 115,366.47/x
3. Step 3: Cross multiply
   187,111.01x = 258,139.89 × 115,366.47
4. Step 4: Simplify right side
   187,111.01x = 29,780,687,875.49
5. Step 5: Solve for x
   x = 29,780,687,875.49/187,111.01
6. Step 6: Final answer
   x = 159,160.54