Finding the Fourth Proportional to 70,648.14, 105,711.93 and 42,584.70

Step by Step Solution

1. Step 1: Write the proportion equation
   70,648.14 : 105,711.93 = 42,584.70 : x
2. Step 2: Convert to fraction form
   70,648.14/105,711.93 = 42,584.70/x
3. Step 3: Cross multiply
   70,648.14x = 105,711.93 × 42,584.70
4. Step 4: Simplify right side
   70,648.14x = 4,501,710,825.47
5. Step 5: Solve for x
   x = 4,501,710,825.47/70,648.14
6. Step 6: Final answer
   x = 63,720.16