Finding the Fourth Proportional to 56,610.81, 78,124.23 and 31,118.49

Step by Step Solution

1. Step 1: Write the proportion equation
   56,610.81 : 78,124.23 = 31,118.49 : x
2. Step 2: Convert to fraction form
   56,610.81/78,124.23 = 31,118.49/x
3. Step 3: Cross multiply
   56,610.81x = 78,124.23 × 31,118.49
4. Step 4: Simplify right side
   56,610.81x = 2,431,108,070.01
5. Step 5: Solve for x
   x = 2,431,108,070.01/56,610.81
6. Step 6: Final answer
   x = 42,944.24