Finding the Fourth Proportional to 142,655.31, 214,018.50 and 42,817.35

Step by Step Solution

1. Step 1: Write the proportion equation
   142,655.31 : 214,018.50 = 42,817.35 : x
2. Step 2: Convert to fraction form
   142,655.31/214,018.50 = 42,817.35/x
3. Step 3: Cross multiply
   142,655.31x = 214,018.50 × 42,817.35
4. Step 4: Simplify right side
   142,655.31x = 9,163,705,020.98
5. Step 5: Solve for x
   x = 9,163,705,020.98/142,655.31
6. Step 6: Final answer
   x = 64,236.69