Finding the Fourth Proportional to 68,191, 102,290.15 and 21,447.52

Step by Step Solution

1. Step 1: Write the proportion equation
   68,191 : 102,290.15 = 21,447.52 : x
2. Step 2: Convert to fraction form
   68,191/102,290.15 = 21,447.52/x
3. Step 3: Cross multiply
   68,191x = 102,290.15 × 21,447.52
4. Step 4: Simplify right side
   68,191x = 2,193,870,037.93
5. Step 5: Solve for x
   x = 2,193,870,037.93/68,191
6. Step 6: Final answer
   x = 32,172.43