Finding the Fourth Proportional to 247,545.72, 371,091.24 and 89,736.12

Step by Step Solution

1. Step 1: Write the proportion equation
   247,545.72 : 371,091.24 = 89,736.12 : x
2. Step 2: Convert to fraction form
   247,545.72/371,091.24 = 89,736.12/x
3. Step 3: Cross multiply
   247,545.72x = 371,091.24 × 89,736.12
4. Step 4: Simplify right side
   247,545.72x = 33,300,288,043.59
5. Step 5: Solve for x
   x = 33,300,288,043.59/247,545.72
6. Step 6: Final answer
   x = 134,521.77