Finding the Fourth Proportional to 78,351.60, 108,124.56 and 42,540.88

Step by Step Solution

1. Step 1: Write the proportion equation
   78,351.60 : 108,124.56 = 42,540.88 : x
2. Step 2: Convert to fraction form
   78,351.60/108,124.56 = 42,540.88/x
3. Step 3: Cross multiply
   78,351.60x = 108,124.56 × 42,540.88
4. Step 4: Simplify right side
   78,351.60x = 4,599,713,932.01
5. Step 5: Solve for x
   x = 4,599,713,932.01/78,351.60
6. Step 6: Final answer
   x = 58,706.06