Finding the Fourth Proportional to 137,105.37, 205,575.01 and 89,663.19

Step by Step Solution

1. Step 1: Write the proportion equation
   137,105.37 : 205,575.01 = 89,663.19 : x
2. Step 2: Convert to fraction form
   137,105.37/205,575.01 = 89,663.19/x
3. Step 3: Cross multiply
   137,105.37x = 205,575.01 × 89,663.19
4. Step 4: Simplify right side
   137,105.37x = 18,432,510,732.57
5. Step 5: Solve for x
   x = 18,432,510,732.57/137,105.37
6. Step 6: Final answer
   x = 134,440.48