Finding the Fourth Proportional to 78,425.03, 108,226.33 and 42,615.05

Step by Step Solution

1. Step 1: Write the proportion equation
   78,425.03 : 108,226.33 = 42,615.05 : x
2. Step 2: Convert to fraction form
   78,425.03/108,226.33 = 42,615.05/x
3. Step 3: Cross multiply
   78,425.03x = 108,226.33 × 42,615.05
4. Step 4: Simplify right side
   78,425.03x = 4,612,069,816.60
5. Step 5: Solve for x
   x = 4,612,069,816.60/78,425.03
6. Step 6: Final answer
   x = 58,808.65