Finding the Fourth Proportional to 56,734.82, 78,293.39 and 31,240.65

Step by Step Solution

1. Step 1: Write the proportion equation
   56,734.82 : 78,293.39 = 31,240.65 : x
2. Step 2: Convert to fraction form
   56,734.82/78,293.39 = 31,240.65/x
3. Step 3: Cross multiply
   56,734.82x = 78,293.39 × 31,240.65
4. Step 4: Simplify right side
   56,734.82x = 2,445,936,238.10
5. Step 5: Solve for x
   x = 2,445,936,238.10/56,734.82
6. Step 6: Final answer
   x = 43,111.73