Finding the Fourth Proportional to 72,958.01, 100,681.80 and 39,424.01

Step by Step Solution

1. Step 1: Write the proportion equation
   72,958.01 : 100,681.80 = 39,424.01 : x
2. Step 2: Convert to fraction form
   72,958.01/100,681.80 = 39,424.01/x
3. Step 3: Cross multiply
   72,958.01x = 100,681.80 × 39,424.01
4. Step 4: Simplify right side
   72,958.01x = 3,969,280,290.02
5. Step 5: Solve for x
   x = 3,969,280,290.02/72,958.01
6. Step 6: Final answer
   x = 54,405.00