Finding the Fourth Proportional to 57,069.84, 78,804.72 and 42,898.08

Step by Step Solution

1. Step 1: Write the proportion equation
   57,069.84 : 78,804.72 = 42,898.08 : x
2. Step 2: Convert to fraction form
   57,069.84/78,804.72 = 42,898.08/x
3. Step 3: Cross multiply
   57,069.84x = 78,804.72 × 42,898.08
4. Step 4: Simplify right side
   57,069.84x = 3,380,571,182.94
5. Step 5: Solve for x
   x = 3,380,571,182.94/57,069.84
6. Step 6: Final answer
   x = 59,235.69