Finding the Fourth Proportional to 56,760.57, 85,064.31 and 28,700.46

Step by Step Solution

1. Step 1: Write the proportion equation
   56,760.57 : 85,064.31 = 28,700.46 : x
2. Step 2: Convert to fraction form
   56,760.57/85,064.31 = 28,700.46/x
3. Step 3: Cross multiply
   56,760.57x = 85,064.31 × 28,700.46
4. Step 4: Simplify right side
   56,760.57x = 2,441,384,826.58
5. Step 5: Solve for x
   x = 2,441,384,826.58/56,760.57
6. Step 6: Final answer
   x = 43,011.99