Finding the Fourth Proportional to 79,688.16, 119,561.76 and 38,106.72

Step by Step Solution

1. Step 1: Write the proportion equation
   79,688.16 : 119,561.76 = 38,106.72 : x
2. Step 2: Convert to fraction form
   79,688.16/119,561.76 = 38,106.72/x
3. Step 3: Cross multiply
   79,688.16x = 119,561.76 × 38,106.72
4. Step 4: Simplify right side
   79,688.16x = 4,556,106,511.03
5. Step 5: Solve for x
   x = 4,556,106,511.03/79,688.16
6. Step 6: Final answer
   x = 57,174.20