Finding the Fourth Proportional to 82,478.72, 113,813.70 and 48,488.32

Step by Step Solution

1. Step 1: Write the proportion equation
   82,478.72 : 113,813.70 = 48,488.32 : x
2. Step 2: Convert to fraction form
   82,478.72/113,813.70 = 48,488.32/x
3. Step 3: Cross multiply
   82,478.72x = 113,813.70 × 48,488.32
4. Step 4: Simplify right side
   82,478.72x = 5,518,635,105.98
5. Step 5: Solve for x
   x = 5,518,635,105.98/82,478.72
6. Step 6: Final answer
   x = 66,909.81