Finding the Fourth Proportional to 56,650.68, 78,180.78 and 31,499.64

Step by Step Solution

1. Step 1: Write the proportion equation
   56,650.68 : 78,180.78 = 31,499.64 : x
2. Step 2: Convert to fraction form
   56,650.68/78,180.78 = 31,499.64/x
3. Step 3: Cross multiply
   56,650.68x = 78,180.78 × 31,499.64
4. Step 4: Simplify right side
   56,650.68x = 2,462,666,424.92
5. Step 5: Solve for x
   x = 2,462,666,424.92/56,650.68
6. Step 6: Final answer
   x = 43,471.08