Finding the Fourth Proportional to 78,725.75, 108,680.32 and 54,545.05

Step by Step Solution

1. Step 1: Write the proportion equation
   78,725.75 : 108,680.32 = 54,545.05 : x
2. Step 2: Convert to fraction form
   78,725.75/108,680.32 = 54,545.05/x
3. Step 3: Cross multiply
   78,725.75x = 108,680.32 × 54,545.05
4. Step 4: Simplify right side
   78,725.75x = 5,927,973,488.42
5. Step 5: Solve for x
   x = 5,927,973,488.42/78,725.75
6. Step 6: Final answer
   x = 75,299.04