Finding the Fourth Proportional to 56,776.82, 77,784.62 and 54,648.54

Step by Step Solution

1. Step 1: Write the proportion equation
   56,776.82 : 77,784.62 = 54,648.54 : x
2. Step 2: Convert to fraction form
   56,776.82/77,784.62 = 54,648.54/x
3. Step 3: Cross multiply
   56,776.82x = 77,784.62 × 54,648.54
4. Step 4: Simplify right side
   56,776.82x = 4,250,815,917.45
5. Step 5: Solve for x
   x = 4,250,815,917.45/56,776.82
6. Step 6: Final answer
   x = 74,868.86