Finding the Fourth Proportional to 72,978.66, 100,710.52 and 39,444.66

Step by Step Solution

1. Step 1: Write the proportion equation
   72,978.66 : 100,710.52 = 39,444.66 : x
2. Step 2: Convert to fraction form
   72,978.66/100,710.52 = 39,444.66/x
3. Step 3: Cross multiply
   72,978.66x = 100,710.52 × 39,444.66
4. Step 4: Simplify right side
   72,978.66x = 3,972,492,219.82
5. Step 5: Solve for x
   x = 3,972,492,219.82/72,978.66
6. Step 6: Final answer
   x = 54,433.61