Finding the Fourth Proportional to 56,912.27, 78,539.14 and 31,418.82

Step by Step Solution

1. Step 1: Write the proportion equation
   56,912.27 : 78,539.14 = 31,418.82 : x
2. Step 2: Convert to fraction form
   56,912.27/78,539.14 = 31,418.82/x
3. Step 3: Cross multiply
   56,912.27x = 78,539.14 × 31,418.82
4. Step 4: Simplify right side
   56,912.27x = 2,467,607,102.61
5. Step 5: Solve for x
   x = 2,467,607,102.61/56,912.27
6. Step 6: Final answer
   x = 43,358.09