Finding the Fourth Proportional to 78,069.88, 107,735.83 and 42,260.32

Step by Step Solution

1. Step 1: Write the proportion equation
   78,069.88 : 107,735.83 = 42,260.32 : x
2. Step 2: Convert to fraction form
   78,069.88/107,735.83 = 42,260.32/x
3. Step 3: Cross multiply
   78,069.88x = 107,735.83 × 42,260.32
4. Step 4: Simplify right side
   78,069.88x = 4,552,950,651.27
5. Step 5: Solve for x
   x = 4,552,950,651.27/78,069.88
6. Step 6: Final answer
   x = 58,318.91