Finding the Fourth Proportional to 78,069.06, 107,735.58 and 42,259.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,069.06 : 107,735.58 = 42,259.50 : x
2. Step 2: Convert to fraction form
   78,069.06/107,735.58 = 42,259.50/x
3. Step 3: Cross multiply
   78,069.06x = 107,735.58 × 42,259.50
4. Step 4: Simplify right side
   78,069.06x = 4,552,851,743.01
5. Step 5: Solve for x
   x = 4,552,851,743.01/78,069.06
6. Step 6: Final answer
   x = 58,318.26