Finding the Fourth Proportional to 56,757, 78,323.88 and 31,262.80

Step by Step Solution

1. Step 1: Write the proportion equation
   56,757 : 78,323.88 = 31,262.80 : x
2. Step 2: Convert to fraction form
   56,757/78,323.88 = 31,262.80/x
3. Step 3: Cross multiply
   56,757x = 78,323.88 × 31,262.80
4. Step 4: Simplify right side
   56,757x = 2,448,623,795.66
5. Step 5: Solve for x
   x = 2,448,623,795.66/56,757
6. Step 6: Final answer
   x = 43,142.23