Finding the Fourth Proportional to 190,128.65, 262,300.83 and 109,513.10

Step by Step Solution

1. Step 1: Write the proportion equation
   190,128.65 : 262,300.83 = 109,513.10 : x
2. Step 2: Convert to fraction form
   190,128.65/262,300.83 = 109,513.10/x
3. Step 3: Cross multiply
   190,128.65x = 262,300.83 × 109,513.10
4. Step 4: Simplify right side
   190,128.65x = 28,725,375,714.37
5. Step 5: Solve for x
   x = 28,725,375,714.37/190,128.65
6. Step 6: Final answer
   x = 151,083.89