Finding the Fourth Proportional to 70,969.20, 106,333.27 and 42,830.11

Step by Step Solution

1. Step 1: Write the proportion equation
   70,969.20 : 106,333.27 = 42,830.11 : x
2. Step 2: Convert to fraction form
   70,969.20/106,333.27 = 42,830.11/x
3. Step 3: Cross multiply
   70,969.20x = 106,333.27 × 42,830.11
4. Step 4: Simplify right side
   70,969.20x = 4,554,265,650.76
5. Step 5: Solve for x
   x = 4,554,265,650.76/70,969.20
6. Step 6: Final answer
   x = 64,172.42