Finding the Fourth Proportional to 56,385, 77,813.73 and 31,234.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,385 : 77,813.73 = 31,234.50 : x
2. Step 2: Convert to fraction form
   56,385/77,813.73 = 31,234.50/x
3. Step 3: Cross multiply
   56,385x = 77,813.73 × 31,234.50
4. Step 4: Simplify right side
   56,385x = 2,430,472,949.69
5. Step 5: Solve for x
   x = 2,430,472,949.69/56,385
6. Step 6: Final answer
   x = 43,104.96