Finding the Fourth Proportional to 55,700.87, 82,972.51 and 52,682.81

Step by Step Solution

1. Step 1: Write the proportion equation
   55,700.87 : 82,972.51 = 52,682.81 : x
2. Step 2: Convert to fraction form
   55,700.87/82,972.51 = 52,682.81/x
3. Step 3: Cross multiply
   55,700.87x = 82,972.51 × 52,682.81
4. Step 4: Simplify right side
   55,700.87x = 4,371,224,979.55
5. Step 5: Solve for x
   x = 4,371,224,979.55/55,700.87
6. Step 6: Final answer
   x = 78,476.78