Finding the Fourth Proportional to 355,711.72, 533,528.25 and 89,472.34

Step by Step Solution

1. Step 1: Write the proportion equation
   355,711.72 : 533,528.25 = 89,472.34 : x
2. Step 2: Convert to fraction form
   355,711.72/533,528.25 = 89,472.34/x
3. Step 3: Cross multiply
   355,711.72x = 533,528.25 × 89,472.34
4. Step 4: Simplify right side
   355,711.72x = 47,736,020,983.61
5. Step 5: Solve for x
   x = 47,736,020,983.61/355,711.72
6. Step 6: Final answer
   x = 134,198.62