Finding the Fourth Proportional to 231,025.97, 346,538.72 and 86,958.70

Step by Step Solution

1. Step 1: Write the proportion equation
   231,025.97 : 346,538.72 = 86,958.70 : x
2. Step 2: Convert to fraction form
   231,025.97/346,538.72 = 86,958.70/x
3. Step 3: Cross multiply
   231,025.97x = 346,538.72 × 86,958.70
4. Step 4: Simplify right side
   231,025.97x = 30,134,555,941.91
5. Step 5: Solve for x
   x = 30,134,555,941.91/231,025.97
6. Step 6: Final answer
   x = 130,437.96