Finding the Fourth Proportional to 355,128.52, 532,687.38 and 105,810.52

Step by Step Solution

1. Step 1: Write the proportion equation
   355,128.52 : 532,687.38 = 105,810.52 : x
2. Step 2: Convert to fraction form
   355,128.52/532,687.38 = 105,810.52/x
3. Step 3: Cross multiply
   355,128.52x = 532,687.38 × 105,810.52
4. Step 4: Simplify right side
   355,128.52x = 56,363,928,675.24
5. Step 5: Solve for x
   x = 56,363,928,675.24/355,128.52
6. Step 6: Final answer
   x = 158,714.17