Finding the Fourth Proportional to 56,818.52, 78,410.10 and 31,325.90

Step by Step Solution

1. Step 1: Write the proportion equation
   56,818.52 : 78,410.10 = 31,325.90 : x
2. Step 2: Convert to fraction form
   56,818.52/78,410.10 = 31,325.90/x
3. Step 3: Cross multiply
   56,818.52x = 78,410.10 × 31,325.90
4. Step 4: Simplify right side
   56,818.52x = 2,456,266,559.54
5. Step 5: Solve for x
   x = 2,456,266,559.54/56,818.52
6. Step 6: Final answer
   x = 43,230.04