Finding the Fourth Proportional to 56,730.78, 78,285.15 and 32,855.76

Step by Step Solution

1. Step 1: Write the proportion equation
   56,730.78 : 78,285.15 = 32,855.76 : x
2. Step 2: Convert to fraction form
   56,730.78/78,285.15 = 32,855.76/x
3. Step 3: Cross multiply
   56,730.78x = 78,285.15 × 32,855.76
4. Step 4: Simplify right side
   56,730.78x = 2,572,118,099.96
5. Step 5: Solve for x
   x = 2,572,118,099.96/56,730.78
6. Step 6: Final answer
   x = 45,339.02