Finding the Fourth Proportional to 82,109.77, 113,312.31 and 48,138.37

Step by Step Solution

1. Step 1: Write the proportion equation
   82,109.77 : 113,312.31 = 48,138.37 : x
2. Step 2: Convert to fraction form
   82,109.77/113,312.31 = 48,138.37/x
3. Step 3: Cross multiply
   82,109.77x = 113,312.31 × 48,138.37
4. Step 4: Simplify right side
   82,109.77x = 5,454,669,904.33
5. Step 5: Solve for x
   x = 5,454,669,904.33/82,109.77
6. Step 6: Final answer
   x = 66,431.44