Finding the Fourth Proportional to 55,355.46, 76,390.71 and 31,483.80

Step by Step Solution

1. Step 1: Write the proportion equation
   55,355.46 : 76,390.71 = 31,483.80 : x
2. Step 2: Convert to fraction form
   55,355.46/76,390.71 = 31,483.80/x
3. Step 3: Cross multiply
   55,355.46x = 76,390.71 × 31,483.80
4. Step 4: Simplify right side
   55,355.46x = 2,405,069,835.50
5. Step 5: Solve for x
   x = 2,405,069,835.50/55,355.46
6. Step 6: Final answer
   x = 43,447.74