Finding the Fourth Proportional to 78,229.54, 107,956.18 and 42,419.49

Step by Step Solution

1. Step 1: Write the proportion equation
   78,229.54 : 107,956.18 = 42,419.49 : x
2. Step 2: Convert to fraction form
   78,229.54/107,956.18 = 42,419.49/x
3. Step 3: Cross multiply
   78,229.54x = 107,956.18 × 42,419.49
4. Step 4: Simplify right side
   78,229.54x = 4,579,445,885.85
5. Step 5: Solve for x
   x = 4,579,445,885.85/78,229.54
6. Step 6: Final answer
   x = 58,538.58