Finding the Fourth Proportional to 105,764.88, 145,944.72 and 63,322.32

Step by Step Solution

1. Step 1: Write the proportion equation
   105,764.88 : 145,944.72 = 63,322.32 : x
2. Step 2: Convert to fraction form
   105,764.88/145,944.72 = 63,322.32/x
3. Step 3: Cross multiply
   105,764.88x = 145,944.72 × 63,322.32
4. Step 4: Simplify right side
   105,764.88x = 9,241,558,262.15
5. Step 5: Solve for x
   x = 9,241,558,262.15/105,764.88
6. Step 6: Final answer
   x = 87,378.33