Finding the Fourth Proportional to 56,853.21, 78,458.69 and 31,360.35

Step by Step Solution

1. Step 1: Write the proportion equation
   56,853.21 : 78,458.69 = 31,360.35 : x
2. Step 2: Convert to fraction form
   56,853.21/78,458.69 = 31,360.35/x
3. Step 3: Cross multiply
   56,853.21x = 78,458.69 × 31,360.35
4. Step 4: Simplify right side
   56,853.21x = 2,460,491,978.94
5. Step 5: Solve for x
   x = 2,460,491,978.94/56,853.21
6. Step 6: Final answer
   x = 43,277.98