Finding the Fourth Proportional to 56,327.32, 77,688.30 and 39,325.96

Step by Step Solution

1. Step 1: Write the proportion equation
   56,327.32 : 77,688.30 = 39,325.96 : x
2. Step 2: Convert to fraction form
   56,327.32/77,688.30 = 39,325.96/x
3. Step 3: Cross multiply
   56,327.32x = 77,688.30 × 39,325.96
4. Step 4: Simplify right side
   56,327.32x = 3,055,166,978.27
5. Step 5: Solve for x
   x = 3,055,166,978.27/56,327.32
6. Step 6: Final answer
   x = 54,239.52