Finding the Fourth Proportional to 89,198.70, 123,099.90 and 58,930.92

Step by Step Solution

1. Step 1: Write the proportion equation
   89,198.70 : 123,099.90 = 58,930.92 : x
2. Step 2: Convert to fraction form
   89,198.70/123,099.90 = 58,930.92/x
3. Step 3: Cross multiply
   89,198.70x = 123,099.90 × 58,930.92
4. Step 4: Simplify right side
   89,198.70x = 7,254,390,358.91
5. Step 5: Solve for x
   x = 7,254,390,358.91/89,198.70
6. Step 6: Final answer
   x = 81,328.43