Finding the Fourth Proportional to 142,635.42, 213,940.38 and 42,817.92

Step by Step Solution

1. Step 1: Write the proportion equation
   142,635.42 : 213,940.38 = 42,817.92 : x
2. Step 2: Convert to fraction form
   142,635.42/213,940.38 = 42,817.92/x
3. Step 3: Cross multiply
   142,635.42x = 213,940.38 × 42,817.92
4. Step 4: Simplify right side
   142,635.42x = 9,160,482,075.61
5. Step 5: Solve for x
   x = 9,160,482,075.61/142,635.42
6. Step 6: Final answer
   x = 64,223.05