Finding the Fourth Proportional to 79,405.11, 109,537.72 and 64,314.81

Step by Step Solution

1. Step 1: Write the proportion equation
   79,405.11 : 109,537.72 = 64,314.81 : x
2. Step 2: Convert to fraction form
   79,405.11/109,537.72 = 64,314.81/x
3. Step 3: Cross multiply
   79,405.11x = 109,537.72 × 64,314.81
4. Step 4: Simplify right side
   79,405.11x = 7,044,897,488.85
5. Step 5: Solve for x
   x = 7,044,897,488.85/79,405.11
6. Step 6: Final answer
   x = 88,720.96