Finding the Fourth Proportional to 78,604.56, 108,439.24 and 53,102.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,604.56 : 108,439.24 = 53,102.72 : x
2. Step 2: Convert to fraction form
   78,604.56/108,439.24 = 53,102.72/x
3. Step 3: Cross multiply
   78,604.56x = 108,439.24 × 53,102.72
4. Step 4: Simplify right side
   78,604.56x = 5,758,418,598.73
5. Step 5: Solve for x
   x = 5,758,418,598.73/78,604.56
6. Step 6: Final answer
   x = 73,258.07