Finding the Fourth Proportional to 56,928.78, 78,578.40 and 33,066.18

Step by Step Solution

1. Step 1: Write the proportion equation
   56,928.78 : 78,578.40 = 33,066.18 : x
2. Step 2: Convert to fraction form
   56,928.78/78,578.40 = 33,066.18/x
3. Step 3: Cross multiply
   56,928.78x = 78,578.40 × 33,066.18
4. Step 4: Simplify right side
   56,928.78x = 2,598,287,518.51
5. Step 5: Solve for x
   x = 2,598,287,518.51/56,928.78
6. Step 6: Final answer
   x = 45,641.02