Finding the Fourth Proportional to 353,638.52, 530,452.61 and 87,399.06

Step by Step Solution

1. Step 1: Write the proportion equation
   353,638.52 : 530,452.61 = 87,399.06 : x
2. Step 2: Convert to fraction form
   353,638.52/530,452.61 = 87,399.06/x
3. Step 3: Cross multiply
   353,638.52x = 530,452.61 × 87,399.06
4. Step 4: Simplify right side
   353,638.52x = 46,361,059,051.55
5. Step 5: Solve for x
   x = 46,361,059,051.55/353,638.52
6. Step 6: Final answer
   x = 131,097.31