Finding the Fourth Proportional to 89,861.76, 134,793.18 and 39,930.12

Step by Step Solution

1. Step 1: Write the proportion equation
   89,861.76 : 134,793.18 = 39,930.12 : x
2. Step 2: Convert to fraction form
   89,861.76/134,793.18 = 39,930.12/x
3. Step 3: Cross multiply
   89,861.76x = 134,793.18 × 39,930.12
4. Step 4: Simplify right side
   89,861.76x = 5,382,307,852.58
5. Step 5: Solve for x
   x = 5,382,307,852.58/89,861.76
6. Step 6: Final answer
   x = 59,895.42