Finding the Fourth Proportional to 56,851.05, 78,455 and 31,358.45

Step by Step Solution

1. Step 1: Write the proportion equation
   56,851.05 : 78,455 = 31,358.45 : x
2. Step 2: Convert to fraction form
   56,851.05/78,455 = 31,358.45/x
3. Step 3: Cross multiply
   56,851.05x = 78,455 × 31,358.45
4. Step 4: Simplify right side
   56,851.05x = 2,460,227,194.75
5. Step 5: Solve for x
   x = 2,460,227,194.75/56,851.05
6. Step 6: Final answer
   x = 43,274.96