Finding the Fourth Proportional to 78,834.53, 108,743.00 and 56,180.78

Step by Step Solution

1. Step 1: Write the proportion equation
   78,834.53 : 108,743.00 = 56,180.78 : x
2. Step 2: Convert to fraction form
   78,834.53/108,743.00 = 56,180.78/x
3. Step 3: Cross multiply
   78,834.53x = 108,743.00 × 56,180.78
4. Step 4: Simplify right side
   78,834.53x = 6,109,265,734.92
5. Step 5: Solve for x
   x = 6,109,265,734.92/78,834.53
6. Step 6: Final answer
   x = 77,494.80