Finding the Fourth Proportional to 78,906.28, 108,899.20 and 48,690.82

Step by Step Solution

1. Step 1: Write the proportion equation
   78,906.28 : 108,899.20 = 48,690.82 : x
2. Step 2: Convert to fraction form
   78,906.28/108,899.20 = 48,690.82/x
3. Step 3: Cross multiply
   78,906.28x = 108,899.20 × 48,690.82
4. Step 4: Simplify right side
   78,906.28x = 5,302,391,345.34
5. Step 5: Solve for x
   x = 5,302,391,345.34/78,906.28
6. Step 6: Final answer
   x = 67,198.60