Finding the Fourth Proportional to 56,859.88, 78,466.71 and 31,365.67

Step by Step Solution

1. Step 1: Write the proportion equation
   56,859.88 : 78,466.71 = 31,365.67 : x
2. Step 2: Convert to fraction form
   56,859.88/78,466.71 = 31,365.67/x
3. Step 3: Cross multiply
   56,859.88x = 78,466.71 × 31,365.67
4. Step 4: Simplify right side
   56,859.88x = 2,461,160,931.85
5. Step 5: Solve for x
   x = 2,461,160,931.85/56,859.88
6. Step 6: Final answer
   x = 43,284.67