Finding the Fourth Proportional to 58,510.76, 87,815.37 and 54,820.20

Step by Step Solution

1. Step 1: Write the proportion equation
   58,510.76 : 87,815.37 = 54,820.20 : x
2. Step 2: Convert to fraction form
   58,510.76/87,815.37 = 54,820.20/x
3. Step 3: Cross multiply
   58,510.76x = 87,815.37 × 54,820.20
4. Step 4: Simplify right side
   58,510.76x = 4,814,056,146.47
5. Step 5: Solve for x
   x = 4,814,056,146.47/58,510.76
6. Step 6: Final answer
   x = 82,276.42