Finding the Fourth Proportional to 78,069.69, 107,736.14 and 42,260.00

Step by Step Solution

1. Step 1: Write the proportion equation
   78,069.69 : 107,736.14 = 42,260.00 : x
2. Step 2: Convert to fraction form
   78,069.69/107,736.14 = 42,260.00/x
3. Step 3: Cross multiply
   78,069.69x = 107,736.14 × 42,260.00
4. Step 4: Simplify right side
   78,069.69x = 4,552,928,843.37
5. Step 5: Solve for x
   x = 4,552,928,843.37/78,069.69
6. Step 6: Final answer
   x = 58,318.78