Finding the Fourth Proportional to 231,313.12, 346,921.58 and 89,109.52

Step by Step Solution

1. Step 1: Write the proportion equation
   231,313.12 : 346,921.58 = 89,109.52 : x
2. Step 2: Convert to fraction form
   231,313.12/346,921.58 = 89,109.52/x
3. Step 3: Cross multiply
   231,313.12x = 346,921.58 × 89,109.52
4. Step 4: Simplify right side
   231,313.12x = 30,914,014,826.91
5. Step 5: Solve for x
   x = 30,914,014,826.91/231,313.12
6. Step 6: Final answer
   x = 133,645.75