Finding the Fourth Proportional to 56,554.78, 78,049.11 and 31,404.46

Step by Step Solution

1. Step 1: Write the proportion equation
   56,554.78 : 78,049.11 = 31,404.46 : x
2. Step 2: Convert to fraction form
   56,554.78/78,049.11 = 31,404.46/x
3. Step 3: Cross multiply
   56,554.78x = 78,049.11 × 31,404.46
4. Step 4: Simplify right side
   56,554.78x = 2,451,090,153.03
5. Step 5: Solve for x
   x = 2,451,090,153.03/56,554.78
6. Step 6: Final answer
   x = 43,340.11