Finding the Fourth Proportional to 72,949.82, 100,670.72 and 39,415.82

Step by Step Solution

1. Step 1: Write the proportion equation
   72,949.82 : 100,670.72 = 39,415.82 : x
2. Step 2: Convert to fraction form
   72,949.82/100,670.72 = 39,415.82/x
3. Step 3: Cross multiply
   72,949.82x = 100,670.72 × 39,415.82
4. Step 4: Simplify right side
   72,949.82x = 3,968,018,278.36
5. Step 5: Solve for x
   x = 3,968,018,278.36/72,949.82
6. Step 6: Final answer
   x = 54,393.81