Finding the Fourth Proportional to 56,861.82, 78,469.89 and 31,369.08

Step by Step Solution

1. Step 1: Write the proportion equation
   56,861.82 : 78,469.89 = 31,369.08 : x
2. Step 2: Convert to fraction form
   56,861.82/78,469.89 = 31,369.08/x
3. Step 3: Cross multiply
   56,861.82x = 78,469.89 × 31,369.08
4. Step 4: Simplify right side
   56,861.82x = 2,461,528,257.00
5. Step 5: Solve for x
   x = 2,461,528,257.00/56,861.82
6. Step 6: Final answer
   x = 43,289.65