Finding the Fourth Proportional to 56,891, 78,506.71 and 31,735.64

Step by Step Solution

1. Step 1: Write the proportion equation
   56,891 : 78,506.71 = 31,735.64 : x
2. Step 2: Convert to fraction form
   56,891/78,506.71 = 31,735.64/x
3. Step 3: Cross multiply
   56,891x = 78,506.71 × 31,735.64
4. Step 4: Simplify right side
   56,891x = 2,491,460,686.14
5. Step 5: Solve for x
   x = 2,491,460,686.14/56,891
6. Step 6: Final answer
   x = 43,793.58