Finding the Fourth Proportional to 67,870.24, 101,820.53 and 20,486.14

Step by Step Solution

1. Step 1: Write the proportion equation
   67,870.24 : 101,820.53 = 20,486.14 : x
2. Step 2: Convert to fraction form
   67,870.24/101,820.53 = 20,486.14/x
3. Step 3: Cross multiply
   67,870.24x = 101,820.53 × 20,486.14
4. Step 4: Simplify right side
   67,870.24x = 2,085,909,632.45
5. Step 5: Solve for x
   x = 2,085,909,632.45/67,870.24
6. Step 6: Final answer
   x = 30,733.79