Finding the Fourth Proportional to 52,912.94, 79,479.15 and 42,792.69

Step by Step Solution

1. Step 1: Write the proportion equation
   52,912.94 : 79,479.15 = 42,792.69 : x
2. Step 2: Convert to fraction form
   52,912.94/79,479.15 = 42,792.69/x
3. Step 3: Cross multiply
   52,912.94x = 79,479.15 × 42,792.69
4. Step 4: Simplify right side
   52,912.94x = 3,401,126,627.41
5. Step 5: Solve for x
   x = 3,401,126,627.41/52,912.94
6. Step 6: Final answer
   x = 64,277.79