Finding the Fourth Proportional to 55,698.87, 82,969.53 and 52,680.81

Step by Step Solution

1. Step 1: Write the proportion equation
   55,698.87 : 82,969.53 = 52,680.81 : x
2. Step 2: Convert to fraction form
   55,698.87/82,969.53 = 52,680.81/x
3. Step 3: Cross multiply
   55,698.87x = 82,969.53 × 52,680.81
4. Step 4: Simplify right side
   55,698.87x = 4,370,902,045.72
5. Step 5: Solve for x
   x = 4,370,902,045.72/55,698.87
6. Step 6: Final answer
   x = 78,473.80