Finding the Fourth Proportional to 98,062.76, 135,355.59 and 57,789.50

Step by Step Solution

1. Step 1: Write the proportion equation
   98,062.76 : 135,355.59 = 57,789.50 : x
2. Step 2: Convert to fraction form
   98,062.76/135,355.59 = 57,789.50/x
3. Step 3: Cross multiply
   98,062.76x = 135,355.59 × 57,789.50
4. Step 4: Simplify right side
   98,062.76x = 7,822,131,191.53
5. Step 5: Solve for x
   x = 7,822,131,191.53/98,062.76
6. Step 6: Final answer
   x = 79,766.58