Finding the Fourth Proportional to 102,496.28, 141,430.72 and 57,168.96

Step by Step Solution

1. Step 1: Write the proportion equation
   102,496.28 : 141,430.72 = 57,168.96 : x
2. Step 2: Convert to fraction form
   102,496.28/141,430.72 = 57,168.96/x
3. Step 3: Cross multiply
   102,496.28x = 141,430.72 × 57,168.96
4. Step 4: Simplify right side
   102,496.28x = 8,085,447,174.45
5. Step 5: Solve for x
   x = 8,085,447,174.45/102,496.28
6. Step 6: Final answer
   x = 78,885.27