Finding the Fourth Proportional to 187,061.61, 258,128.28 and 115,464.69

Step by Step Solution

1. Step 1: Write the proportion equation
   187,061.61 : 258,128.28 = 115,464.69 : x
2. Step 2: Convert to fraction form
   187,061.61/258,128.28 = 115,464.69/x
3. Step 3: Cross multiply
   187,061.61x = 258,128.28 × 115,464.69
4. Step 4: Simplify right side
   187,061.61x = 29,804,701,830.43
5. Step 5: Solve for x
   x = 29,804,701,830.43/187,061.61
6. Step 6: Final answer
   x = 159,330.94