Finding the Fourth Proportional to 67,676.07, 93,402.81 and 38,990.15

Step by Step Solution

1. Step 1: Write the proportion equation
   67,676.07 : 93,402.81 = 38,990.15 : x
2. Step 2: Convert to fraction form
   67,676.07/93,402.81 = 38,990.15/x
3. Step 3: Cross multiply
   67,676.07x = 93,402.81 × 38,990.15
4. Step 4: Simplify right side
   67,676.07x = 3,641,789,572.32
5. Step 5: Solve for x
   x = 3,641,789,572.32/67,676.07
6. Step 6: Final answer
   x = 53,812.07