Finding the Fourth Proportional to 79,851.48, 110,139.78 and 64,744.77

Step by Step Solution

1. Step 1: Write the proportion equation
   79,851.48 : 110,139.78 = 64,744.77 : x
2. Step 2: Convert to fraction form
   79,851.48/110,139.78 = 64,744.77/x
3. Step 3: Cross multiply
   79,851.48x = 110,139.78 × 64,744.77
4. Step 4: Simplify right side
   79,851.48x = 7,130,974,723.95
5. Step 5: Solve for x
   x = 7,130,974,723.95/79,851.48
6. Step 6: Final answer
   x = 89,302.98