Finding the Fourth Proportional to 72,682.68, 100,274.22 and 55,689.96

Step by Step Solution

1. Step 1: Write the proportion equation
   72,682.68 : 100,274.22 = 55,689.96 : x
2. Step 2: Convert to fraction form
   72,682.68/100,274.22 = 55,689.96/x
3. Step 3: Cross multiply
   72,682.68x = 100,274.22 × 55,689.96
4. Step 4: Simplify right side
   72,682.68x = 5,584,267,300.83
5. Step 5: Solve for x
   x = 5,584,267,300.83/72,682.68
6. Step 6: Final answer
   x = 76,830.78