Finding the Fourth Proportional to 72,998.72, 100,738.37 and 39,464.72

Step by Step Solution

1. Step 1: Write the proportion equation
   72,998.72 : 100,738.37 = 39,464.72 : x
2. Step 2: Convert to fraction form
   72,998.72/100,738.37 = 39,464.72/x
3. Step 3: Cross multiply
   72,998.72x = 100,738.37 × 39,464.72
4. Step 4: Simplify right side
   72,998.72x = 3,975,611,316.06
5. Step 5: Solve for x
   x = 3,975,611,316.06/72,998.72
6. Step 6: Final answer
   x = 54,461.38