Finding the Fourth Proportional to 54,978.73, 82,492.69 and 31,605.17

Step by Step Solution

1. Step 1: Write the proportion equation
   54,978.73 : 82,492.69 = 31,605.17 : x
2. Step 2: Convert to fraction form
   54,978.73/82,492.69 = 31,605.17/x
3. Step 3: Cross multiply
   54,978.73x = 82,492.69 × 31,605.17
4. Step 4: Simplify right side
   54,978.73x = 2,607,194,999.73
5. Step 5: Solve for x
   x = 2,607,194,999.73/54,978.73
6. Step 6: Final answer
   x = 47,421.89