Finding the Fourth Proportional to 65,212.72, 97,830.06 and 20,223.70

Step by Step Solution

1. Step 1: Write the proportion equation
   65,212.72 : 97,830.06 = 20,223.70 : x
2. Step 2: Convert to fraction form
   65,212.72/97,830.06 = 20,223.70/x
3. Step 3: Cross multiply
   65,212.72x = 97,830.06 × 20,223.70
4. Step 4: Simplify right side
   65,212.72x = 1,978,485,784.42
5. Step 5: Solve for x
   x = 1,978,485,784.42/65,212.72
6. Step 6: Final answer
   x = 30,338.96