Finding the Fourth Proportional to 142,772.58, 214,120.49 and 42,910.47

Step by Step Solution

1. Step 1: Write the proportion equation
   142,772.58 : 214,120.49 = 42,910.47 : x
2. Step 2: Convert to fraction form
   142,772.58/214,120.49 = 42,910.47/x
3. Step 3: Cross multiply
   142,772.58x = 214,120.49 × 42,910.47
4. Step 4: Simplify right side
   142,772.58x = 9,188,010,647.98
5. Step 5: Solve for x
   x = 9,188,010,647.98/142,772.58
6. Step 6: Final answer
   x = 64,354.17