Finding the Fourth Proportional to 70,506.09, 105,706.53 and 42,419.56

Step by Step Solution

1. Step 1: Write the proportion equation
   70,506.09 : 105,706.53 = 42,419.56 : x
2. Step 2: Convert to fraction form
   70,506.09/105,706.53 = 42,419.56/x
3. Step 3: Cross multiply
   70,506.09x = 105,706.53 × 42,419.56
4. Step 4: Simplify right side
   70,506.09x = 4,484,024,862.04
5. Step 5: Solve for x
   x = 4,484,024,862.04/70,506.09
6. Step 6: Final answer
   x = 63,597.70