Finding the Fourth Proportional to 56,710.50, 78,263.94 and 31,560

Step by Step Solution

1. Step 1: Write the proportion equation
   56,710.50 : 78,263.94 = 31,560 : x
2. Step 2: Convert to fraction form
   56,710.50/78,263.94 = 31,560/x
3. Step 3: Cross multiply
   56,710.50x = 78,263.94 × 31,560
4. Step 4: Simplify right side
   56,710.50x = 2,470,009,946.40
5. Step 5: Solve for x
   x = 2,470,009,946.40/56,710.50
6. Step 6: Final answer
   x = 43,554.72