Finding the Fourth Proportional to 59,900.40, 82,689.12 and 38,690.01

Step by Step Solution

1. Step 1: Write the proportion equation
   59,900.40 : 82,689.12 = 38,690.01 : x
2. Step 2: Convert to fraction form
   59,900.40/82,689.12 = 38,690.01/x
3. Step 3: Cross multiply
   59,900.40x = 82,689.12 × 38,690.01
4. Step 4: Simplify right side
   59,900.40x = 3,199,242,879.69
5. Step 5: Solve for x
   x = 3,199,242,879.69/59,900.40
6. Step 6: Final answer
   x = 53,409.37