Finding the Fourth Proportional to 72,577.32, 108,878.73 and 33,138.42

Step by Step Solution

1. Step 1: Write the proportion equation
   72,577.32 : 108,878.73 = 33,138.42 : x
2. Step 2: Convert to fraction form
   72,577.32/108,878.73 = 33,138.42/x
3. Step 3: Cross multiply
   72,577.32x = 108,878.73 × 33,138.42
4. Step 4: Simplify right side
   72,577.32x = 3,608,069,083.81
5. Step 5: Solve for x
   x = 3,608,069,083.81/72,577.32
6. Step 6: Final answer
   x = 49,713.45