Finding the Fourth Proportional to 56,768.88, 78,264.72 and 39,750.24

Step by Step Solution

1. Step 1: Write the proportion equation
   56,768.88 : 78,264.72 = 39,750.24 : x
2. Step 2: Convert to fraction form
   56,768.88/78,264.72 = 39,750.24/x
3. Step 3: Cross multiply
   56,768.88x = 78,264.72 × 39,750.24
4. Step 4: Simplify right side
   56,768.88x = 3,111,041,403.53
5. Step 5: Solve for x
   x = 3,111,041,403.53/56,768.88
6. Step 6: Final answer
   x = 54,801.88