Finding the Fourth Proportional to 59,076.56, 81,483.60 and 57,123.92

Step by Step Solution

1. Step 1: Write the proportion equation
   59,076.56 : 81,483.60 = 57,123.92 : x
2. Step 2: Convert to fraction form
   59,076.56/81,483.60 = 57,123.92/x
3. Step 3: Cross multiply
   59,076.56x = 81,483.60 × 57,123.92
4. Step 4: Simplify right side
   59,076.56x = 4,654,662,647.71
5. Step 5: Solve for x
   x = 4,654,662,647.71/59,076.56
6. Step 6: Final answer
   x = 78,790.35