Finding the Fourth Proportional to 187,718.72, 259,070.42 and 107,158.34

Step by Step Solution

1. Step 1: Write the proportion equation
   187,718.72 : 259,070.42 = 107,158.34 : x
2. Step 2: Convert to fraction form
   187,718.72/259,070.42 = 107,158.34/x
3. Step 3: Cross multiply
   187,718.72x = 259,070.42 × 107,158.34
4. Step 4: Simplify right side
   187,718.72x = 27,761,556,150.30
5. Step 5: Solve for x
   x = 27,761,556,150.30/187,718.72
6. Step 6: Final answer
   x = 147,889.12