Finding the Fourth Proportional to 64,571.77, 89,109.89 and 39,077.83

Step by Step Solution

1. Step 1: Write the proportion equation
   64,571.77 : 89,109.89 = 39,077.83 : x
2. Step 2: Convert to fraction form
   64,571.77/89,109.89 = 39,077.83/x
3. Step 3: Cross multiply
   64,571.77x = 89,109.89 × 39,077.83
4. Step 4: Simplify right side
   64,571.77x = 3,482,221,132.74
5. Step 5: Solve for x
   x = 3,482,221,132.74/64,571.77
6. Step 6: Final answer
   x = 53,927.92