Finding the Fourth Proportional to 72,916.42, 100,624.69 and 39,382.42

Step by Step Solution

1. Step 1: Write the proportion equation
   72,916.42 : 100,624.69 = 39,382.42 : x
2. Step 2: Convert to fraction form
   72,916.42/100,624.69 = 39,382.42/x
3. Step 3: Cross multiply
   72,916.42x = 100,624.69 × 39,382.42
4. Step 4: Simplify right side
   72,916.42x = 3,962,843,727.40
5. Step 5: Solve for x
   x = 3,962,843,727.40/72,916.42
6. Step 6: Final answer
   x = 54,347.76