Finding the Fourth Proportional to 56,816.32, 78,405.44 and 32,945.20

Step by Step Solution

1. Step 1: Write the proportion equation
   56,816.32 : 78,405.44 = 32,945.20 : x
2. Step 2: Convert to fraction form
   56,816.32/78,405.44 = 32,945.20/x
3. Step 3: Cross multiply
   56,816.32x = 78,405.44 × 32,945.20
4. Step 4: Simplify right side
   56,816.32x = 2,583,082,901.89
5. Step 5: Solve for x
   x = 2,583,082,901.89/56,816.32
6. Step 6: Final answer
   x = 45,463.75