Finding the Fourth Proportional to 70,940.67, 106,412.06 and 21,025.83

Step by Step Solution

1. Step 1: Write the proportion equation
   70,940.67 : 106,412.06 = 21,025.83 : x
2. Step 2: Convert to fraction form
   70,940.67/106,412.06 = 21,025.83/x
3. Step 3: Cross multiply
   70,940.67x = 106,412.06 × 21,025.83
4. Step 4: Simplify right side
   70,940.67x = 2,237,401,883.51
5. Step 5: Solve for x
   x = 2,237,401,883.51/70,940.67
6. Step 6: Final answer
   x = 31,539.06