Finding the Fourth Proportional to 55,920.50, 77,170.83 and 30,770.54

Step by Step Solution

1. Step 1: Write the proportion equation
   55,920.50 : 77,170.83 = 30,770.54 : x
2. Step 2: Convert to fraction form
   55,920.50/77,170.83 = 30,770.54/x
3. Step 3: Cross multiply
   55,920.50x = 77,170.83 × 30,770.54
4. Step 4: Simplify right side
   55,920.50x = 2,374,588,111.35
5. Step 5: Solve for x
   x = 2,374,588,111.35/55,920.50
6. Step 6: Final answer
   x = 42,463.64