Finding the Fourth Proportional to 78,244.88, 107,977.18 and 42,435.68

Step by Step Solution

1. Step 1: Write the proportion equation
   78,244.88 : 107,977.18 = 42,435.68 : x
2. Step 2: Convert to fraction form
   78,244.88/107,977.18 = 42,435.68/x
3. Step 3: Cross multiply
   78,244.88x = 107,977.18 × 42,435.68
4. Step 4: Simplify right side
   78,244.88x = 4,582,085,057.78
5. Step 5: Solve for x
   x = 4,582,085,057.78/78,244.88
6. Step 6: Final answer
   x = 58,560.83