Finding the Fourth Proportional to 78,180.69, 107,888.88 and 42,370.68

Step by Step Solution

1. Step 1: Write the proportion equation
   78,180.69 : 107,888.88 = 42,370.68 : x
2. Step 2: Convert to fraction form
   78,180.69/107,888.88 = 42,370.68/x
3. Step 3: Cross multiply
   78,180.69x = 107,888.88 × 42,370.68
4. Step 4: Simplify right side
   78,180.69x = 4,571,325,210.04
5. Step 5: Solve for x
   x = 4,571,325,210.04/78,180.69
6. Step 6: Final answer
   x = 58,471.28