Finding the Fourth Proportional to 57,820.14, 79,762.56 and 38,700.72

Step by Step Solution

1. Step 1: Write the proportion equation
   57,820.14 : 79,762.56 = 38,700.72 : x
2. Step 2: Convert to fraction form
   57,820.14/79,762.56 = 38,700.72/x
3. Step 3: Cross multiply
   57,820.14x = 79,762.56 × 38,700.72
4. Step 4: Simplify right side
   57,820.14x = 3,086,868,501.04
5. Step 5: Solve for x
   x = 3,086,868,501.04/57,820.14
6. Step 6: Final answer
   x = 53,387.43